81279 + Interview Questions in Mathematics QA in Mathematics Page 1610 InterviewSolution

80451.	Question mumbers 13 to 22 carry 3 marks each13· Three bells toll at intervals of 9, 12, 15 minutes respectively. If they start tolling together, after what timewill they next toll together ?
Answer»

Discussion

80452.	A survey was conducted by a group of students as a part of their environment awarenessprogramme, in which they collected the following Jata regarding the number of plants in20 houses in a locality. Find the mean number of plants per house.Number of plants0-2 2-4 4-6 6-8 8-10 10-12 12-14Number of houses 1
Answer»

Discussion

80453.	uibel l live digits exactly divisible by 9, 12, 15, 18 and 245. Three bells toll at intervals of 9, 12, 15 minutes. If they start tolling together, after whatbwill they next toll together?
Answer» sorry for feedback, it was correct answer.

Discussion

80454.	\frac { ( 7 + 3 \sqrt { 5 } ) } { ( 3 + \sqrt { 5 } ) } - \frac { ( 7 - 3 \sqrt { 5 } ) } { ( 3 - \sqrt { 5 } ) }
Answer» Rationalize both part and get the dinominator without any root means a rational number then simply solve it

Discussion

80455.	\frac { 7 + 3 \sqrt { 5 } } { 3 + \sqrt { 5 } } - \frac { 7 - 3 \sqrt { 5 } } { 3 - \sqrt { 5 } } = a + b \sqrt { 5 }
Answer»

Discussion

80456.	Read and write the names of the number by separating the digits according to the period of the digits. 93, 375, 4367, 753684
Answer» ninety three , three hundred seventy five, four thousand three hundred sisty seven, seven lakh fifty three thousand six hundred eighty four. PLEASE GIVE ME A LIKE 90+ 3, 300+70+5, 4000+300+60+7, 700000+50000+3000+600+80+4 Ninety three, three hundred seventy five, four thousands three hundred sixty saven, seven lakh Fifty three thousands six hundred eighty four ninety three.three hundred seventy fivefour thousand three hundred sixty sevenseven lacs fifty three thousand six hundred eighty four

80456.

Read and write the names of the number by separating the digits according to the period of the digits. 93, 375, 4367, 753684

Answer»

ninety three , three hundred seventy five, four thousand three hundred sisty seven, seven lakh fifty three thousand six hundred eighty four. PLEASE GIVE ME A LIKE

90+ 3, 300+70+5, 4000+300+60+7, 700000+50000+3000+600+80+4

Ninety three, three hundred seventy five, four thousands three hundred sixty saven, seven lakh Fifty three thousands six hundred eighty four

ninety three.three hundred seventy fivefour thousand three hundred sixty sevenseven lacs fifty three thousand six hundred eighty four

Discussion

80457.	find the value of Jax Jata a
Answer»

Discussion

80458.	ngos nou willen can measure the three dimensions of the rooms exactlyA circular field has a circumference of 360Km. Three cyclists start together and can cycle48, 60 and 72 Km a day, round the field. When will hey meat again?
Answer» thnku

Discussion

80459.	9. Subtract the sum of 3and 39from the sum of 53and 4 .9
Answer»

Discussion

80460.	) Every rational number is a whole number
Answer» False; as rational numbers may be fractional but whole numbers may not be. For example:1/5 is a rational number but not a whole number. Yes. 0=0/1=0/2=0/3 etc

80460.

) Every rational number is a whole number

Answer»

False; as rational numbers may be fractional but whole numbers may not be. For example:1/5 is a rational number but not a whole number.

Yes. 0=0/1=0/2=0/3 etc

Discussion

80461.	37. The distance between two stations is 300 km. Two motor-cyclists start simultaneously from thesestations and move towards each other. The speed of one of them is 7 km/hr faster than that of theother. If the distance between them after 2 hours of their start is 34 km, find the speed of eachmotor-cyclist.
Answer»

Discussion

80462.	if 4 metre is equas to 400 cm then 8 metre is equals to ?
Answer»

Discussion

80463.	1.Solve: 5(x+5)+6 (y -3)-49(x-1)+4 (y-2) = 4(A) x = 10, y =-9(C) x 5, y-6(B) x=9, y=-10(D) x-6, y =-5
Answer»

Discussion

80464.	Is zero a rational sCan you write it in the form , where p and q are int1.and qu 0?Find six rational numbers between 3 and 42.Find five rational numbers between 5 and 33.4. State whether the following statements are true or false. Give reasons for your an(0 Every natural number is a whole number(0) Every integer is a whole number() Every rational number is a whole number1.2 Irrational NumbersWe saw, in the previous section, that there may be numbers on the number linare not rationals. In this secotion, we are going to investigate these numbers. Softhe numbers you have come across, are of the form P, where p and q are inand g sr0, So, you may ask: are there numbers which are not of this form?The Pythagoreans in Greece, followers of the famousmathematician and philosopher Pythagonas, were the firstto discover the numbers which were not rationals, around400 BC These numbers are called irrational numbersUrrationals), because they cannot be written in the form fa ratio of ieteyers. There are many myths surrounding theof irrational oumbers by the Pythagorean,of Croton In all the mytlis, Hippacus has anHi
Answer» circle the rational number and cross the ones which are not rational number given reason also What Have we discussed find six rational number between 3/5 and 54/

80464.

Is zero a rational sCan you write it in the form , where p and q are int1.and qu 0?Find six rational numbers between 3 and 42.Find five rational numbers between 5 and 33.4. State whether the following statements are true or false. Give reasons for your an(0 Every natural number is a whole number(0) Every integer is a whole number() Every rational number is a whole number1.2 Irrational NumbersWe saw, in the previous section, that there may be numbers on the number linare not rationals. In this secotion, we are going to investigate these numbers. Softhe numbers you have come across, are of the form P, where p and q are inand g sr0, So, you may ask: are there numbers which are not of this form?The Pythagoreans in Greece, followers of the famousmathematician and philosopher Pythagonas, were the firstto discover the numbers which were not rationals, around400 BC These numbers are called irrational numbersUrrationals), because they cannot be written in the form fa ratio of ieteyers. There are many myths surrounding theof irrational oumbers by the Pythagorean,of Croton In all the mytlis, Hippacus has anHi

Answer»

circle the rational number and cross the ones which are not rational number given reason also

What Have we discussed

find six rational number between 3/5 and 54/

Discussion

80465.	MATHEMATNUMBER SYSTEMSEXERCISE 1.1where p and q are integers1. Is zero a rational number? Can you write it in the formand q +0?2. Find six rational numbers between 3 and 4.you can add rando, z is a numberrational numbers3. Find five rational numbers between and4. State whether the following statements are true or false. Give reasons for your answers.0 Every natural number is a whole number.C) Every integer is a whole number.(ii) Every rational number is a whole number.one step. Sinceominator 5+1,1.2 Irrational NumbersWe saw, in the previous section, that there may be numbers on the number line thatare not rationals. In this section, we are going to investigate these numbers. So far, allare all rationalthe numbers you have come across, are of the form , where p and q are integersand 9 0. So, you may ask: are there numbers which are not of this form? There areindeed such numbersonal numbers
Answer» bro I don't know what is the correct answer because i m study in class 8 can u like my answer and accept the answer I don't know dear because I am a student of bio.

80465.

MATHEMATNUMBER SYSTEMSEXERCISE 1.1where p and q are integers1. Is zero a rational number? Can you write it in the formand q +0?2. Find six rational numbers between 3 and 4.you can add rando, z is a numberrational numbers3. Find five rational numbers between and4. State whether the following statements are true or false. Give reasons for your answers.0 Every natural number is a whole number.C) Every integer is a whole number.(ii) Every rational number is a whole number.one step. Sinceominator 5+1,1.2 Irrational NumbersWe saw, in the previous section, that there may be numbers on the number line thatare not rationals. In this section, we are going to investigate these numbers. So far, allare all rationalthe numbers you have come across, are of the form , where p and q are integersand 9 0. So, you may ask: are there numbers which are not of this form? There areindeed such numbersonal numbers

Answer»

bro I don't know what is the correct answer because i m study in class 8

can u like my answer and accept the answer

I don't know dear because I am a student of bio.

Discussion

80466.	1. A ladder 13 m long rests against a verticalwall. If the foot of the ladder is 5 m from thefoot of the wall, find the distance of the otherend of the ladder from the ground.
Answer»

Discussion

80467.	2.Simplify each of the following expressions:
Answer»

Discussion

80468.	64425 Mein add kiya Jayega ki 2 lakh hoga
Answer» 200000 - 64425= 135575

Discussion

80469.	The distance between two stations is300 km. Two motorists startsimultaneously from their stations andmove towards each other. The speed ofOone of them is 7 km/hr more than thespeed of the other. If the distancebetween them after 2 hours of their startis 34 km. Find the speed of eachmotorist?
Answer» right answer

Discussion

80470.	Triple b less 4 equals 8.
Answer» 3b - 4 = 8 3b = 8 + 4 = 12 b = 4

Discussion

80471.	Check Your Progress 23.2Let ALetQ. 1. A ladder leaning against a vertical wall Nowmakes an angle of 60 with the ground. Thefoot of the ladder is at a distance of 3 m fromthe wall. Find the length of the ladder.AnsSol. Let AC is a ladder.ACB = 60Â° andor
Answer»

Discussion

80472.	State whether the following statements are true or false. Justify your answers0) Every irrational number is a real number.
Answer» all irrational numbers are real numbers

Discussion

80473.	A ladder leaning against a vertical wall, makes an angle of 60 with the ground. Thefoot of the ladder is 3.5 m away from the wall. Find the length of the ladder.
Answer» length of ladder = AB = 6.0 m

Discussion

80474.	Simplify each of the following expressions:
Answer»

Discussion

80475.	500 rupees ka 5% ki dar se 2 year ka sadharan beyaj kya hoga
Answer» 50052/100=50साधारण ब्याज= PTR/100= 50 होगा

Discussion

80476.	39.The price list of vegetables in a supermarket is given as follows:ItemQuantityPrice ()Tomato1 kgPotato2 kgCarrot250 gBottlegourd1 kgChillies100 gLemon4 pieces10Sanjay buys į kg tomatoes, 1 kgpotatoes, į kg carrot, 250 g chilliesand 6 lemons. He gives a note of 200to the bill clerk at the counter. Howmuch money will he get back?(1)*86.50(2) 397.50(3)112.50
Answer» 1/2kg tomatoes=201kg. potatoes =12.51/2kg carrots. =40250g chillies. =256pieces lemon =15_______________________Total amount. =112.5_______________________Sanjay gave 200Rshe will get back:-he gave - total amount200- 112.5=87.5he will get back Rs 87.5 _____ 1/2 kg 🍅=201 kg potatoes =12.51/2 kg carrots = 40250 gm chilly = 256 pieces 🍋= 15--------------------------------------total amount =112.5-----------------------------------------sanjay gave 200 Rs he will get back =200-112.5= 87.5 87.5 is the correct answer

80476.

39.The price list of vegetables in a supermarket is given as follows:ItemQuantityPrice ()Tomato1 kgPotato2 kgCarrot250 gBottlegourd1 kgChillies100 gLemon4 pieces10Sanjay buys į kg tomatoes, 1 kgpotatoes, į kg carrot, 250 g chilliesand 6 lemons. He gives a note of 200to the bill clerk at the counter. Howmuch money will he get back?(1)*86.50(2) 397.50(3)112.50

Answer»

1/2kg tomatoes=201kg. potatoes =12.51/2kg carrots. =40250g chillies. =256pieces lemon =15_______________________Total amount. =112.5_______________________Sanjay gave 200Rshe will get back:-he gave - total amount200- 112.5=87.5he will get back Rs 87.5 _____

1/2 kg 🍅=201 kg potatoes =12.51/2 kg carrots = 40250 gm chilly = 256 pieces 🍋= 15--------------------------------------total amount =112.5-----------------------------------------sanjay gave 200 Rs he will get back =200-112.5= 87.5

87.5 is the correct answer

Discussion

80477.	* Stem french wolus. f *
Answer»

Discussion

80478.	7· aft sin 282一司, 게cos (75°-0)2
Answer» sin2x=1/2=sin30so 2x=30so x=15cos(75-15)=cos60=1/2

Discussion

80479.	Example 1 : Are the following statements true or false? Give reasons for your answers.(1) Every whole number is a natural number,
Answer» True because whole number is from 1 to infinite and natural is from 0 to infinite. False because whole starts with 0to infinite but natural numbers starts with 1to infinite only 0 is the difference in whole numbers between natural

80479.

Example 1 : Are the following statements true or false? Give reasons for your answers.(1) Every whole number is a natural number,

Answer»

True because whole number is from 1 to infinite and natural is from 0 to infinite.

False because whole starts with 0to infinite but natural numbers starts with 1to infinite only 0 is the difference in whole numbers between natural

Discussion

80480.	Him.U be-16. For each of the following statements, write IT) for true and Fifor falsea) The smallest integer is zero.-10 is greater than -7(H) Zero is larger than every negative Integerv The sum of two negative imtegers is a negative integer{vThe sum of a negative integer and a positive Integer is always a positive integer
Answer»

Discussion

80481.	rise the following expressions completely. (AS-I2) 3x 3) 282 21m1 4)
Answer»

Discussion

80482.	Q48 The LCM of 47, 141 and 188 is:(A) 564(C) 376(B) 282(D) 424
Answer» LCM of47= 471141= 3471188= 22474712= 564

Discussion

80483.	6. A lotus is 2m above the water in a pond. Due to wind the lotus slides on the side andonly the stem completely submerges in the water at a distance of 10m from theoriginal position. Find the depth of water in the pond.
Answer»

Discussion

80484.	x2.72m.6. A lotus is 2m above the water in a pond. Due to wind the lotus slides on the side andonly the stem completely submerges in the water at a distance of 10m from theoriginal position. Find the depth of water in the pond.
Answer» Let the depth of the pond BC bexm. ∴CA = CD = (x+ 2) m In right ∆BCD, CD^2= BC^2+ BD^2 ⇒ (x+ 2)^2=x^2+ (10)^2 ⇒x^2+ 4x+ 4 =x^2+ 100 ⇒ 4x= 96 ⇒x= 24 Thus, the depth of the pond is 24 m. please send figure tq

80484.

x2.72m.6. A lotus is 2m above the water in a pond. Due to wind the lotus slides on the side andonly the stem completely submerges in the water at a distance of 10m from theoriginal position. Find the depth of water in the pond.

Answer»

Let the depth of the pond BC bexm.

∴CA = CD = (x+ 2) m

In right ∆BCD,

CD^2= BC^2+ BD^2

⇒ (x+ 2)^2=x^2+ (10)^2

⇒x^2+ 4x+ 4 =x^2+ 100

⇒ 4x= 96

⇒x= 24

Thus, the depth of the pond is 24 m.

please send figure

tq

Discussion

80485.	5. One day Sumit bought 2 kg 390 g orange and 5 kg 685 g papaya. Find the toemass of fruits bought by him.
Answer» Orange=2kg390gPapaya=5kg685gTotal=8kg075g From which book have you taken this question? Please tell us so that we can provide you faster answer.

80485.

5. One day Sumit bought 2 kg 390 g orange and 5 kg 685 g papaya. Find the toemass of fruits bought by him.

Answer»

Orange=2kg390gPapaya=5kg685gTotal=8kg075g

From which book have you taken this question? Please tell us so that we can provide you faster answer.

Discussion

80486.	howmuctlke 36 cakes,: Sumait buys the following items to make a mixed vegetable curryTomatoPeasCabbageCapsicumPotatoBeansWeight2 kg250 g2 kg1 k500 g250 gWhat is the total weight of theitems (in kg)?
Answer»

Discussion

80487.	8. The present ages of Mahesh and his father are 20 years and 50 years respectively. How manyyears ago was Mahesh's father 4 times as old as Mahesh then?Solution
Answer»

Discussion

80488.	The ratio of the ages of a man and his wife is 4:3.After 4 years, this ratio will be 9: 7. If at the timeof marriage, the ratio was 5:3, then how manyyears ago were they married?ESTATE
Answer» Let the present age of the man and his wife be4xand3xrespectively. After4years this ratio will become9:7⇒(4x+4):(3x+4)=9:7⇒7(4x+4)=9(3x+4)⇒28x+28=27x+36⇒x=8 Present age of the man=4x=4×8=32Present age of his wife=3x=3×8=24 Assume that they got married beforet years. Then,(32−t):(24−t)=5:3⇒3(32−t)=5(24−t)⇒96−3t=120−5t⇒2t=24 t=24/2=12 years

80488.

The ratio of the ages of a man and his wife is 4:3.After 4 years, this ratio will be 9: 7. If at the timeof marriage, the ratio was 5:3, then how manyyears ago were they married?ESTATE

Answer»

Let the present age of the man and his wife be4xand3xrespectively.

After4years this ratio will become9:7⇒(4x+4):(3x+4)=9:7⇒7(4x+4)=9(3x+4)⇒28x+28=27x+36⇒x=8

Present age of the man=4x=4×8=32Present age of his wife=3x=3×8=24

Assume that they got married beforet years. Then,(32−t):(24−t)=5:3⇒3(32−t)=5(24−t)⇒96−3t=120−5t⇒2t=24

t=24/2=12 years

Discussion

80489.	5. Sonali had 735 She got # 16 from her mother and spent 282 on food. Howmuch money is left with her?
Answer» Sonali=rs 178/5her mother gave=rs 241/15she spent=86/3money left=178/5+241/15-86/3178×3+241-86×5/15=534+241-430/15=345/15=rs 23 178/5 + 241/15 - 86/3=775/15-86/3=345/15=23 ₹

80489.

5. Sonali had 735 She got # 16 from her mother and spent 282 on food. Howmuch money is left with her?

Answer»

Sonali=rs 178/5her mother gave=rs 241/15she spent=86/3money left=178/5+241/15-86/3178×3+241-86×5/15=534+241-430/15=345/15=rs 23

178/5 + 241/15 - 86/3=775/15-86/3=345/15=23 ₹

Discussion

80490.	ofrequired?9. Arun bought 2 kg 500 g of onions, 1 kg 250 gpotatoes, 2 kg 15 g of tomatoes and 750 g of othermixed vegetables. How much vegetables altogetherdid he buy?
Answer» 2,500 +1,250 + 2,075 + 0,750= 6,575 weight of onions=2 kg 500gweight of potatoes=1 kg 250 gweight of tomatoes=2 kg 15gweight of other mixed vegetables=750g weight of vegetable bought by arun altogether= 2•500 1•250 2•015 0•750_________=6•515_________ ans=6•515=6kg515g

80490.

ofrequired?9. Arun bought 2 kg 500 g of onions, 1 kg 250 gpotatoes, 2 kg 15 g of tomatoes and 750 g of othermixed vegetables. How much vegetables altogetherdid he buy?

Answer»

2,500 +1,250 + 2,075 + 0,750= 6,575

weight of onions=2 kg 500gweight of potatoes=1 kg 250 gweight of tomatoes=2 kg 15gweight of other mixed vegetables=750g

weight of vegetable bought by arun altogether=

2•500 1•250 2•015 0•750_________=6•515_________ ans=6•515=6kg515g

Discussion

80491.	7. From the sum of Sx5x+2 and-x2 - Sx +6, subtract 4x2-9x +72 na G- 412x- 6xu then
Answer»

Discussion

80492.	थ 2 दाद 2Bk Lyg el Inb By 18 eue B डिक 2L: e ot €1 jodk) कि BRle 2 9lm w ’Aan_l%,n\ul e OC 7MW
Answer» please like kro agar answer se satisfied ho to

Discussion

80493.	INCERT ExemplarIl of a bacteria triples itself every hour. How many cells will be there after 9 hour, twe start with 3 cells? Express the answer using exponents.itัะตThenitially we start with
Answer» Number of hours = 9. It triples every hours. So, at the end of 9 hours = 3^9 Please hit the like button if this helped you Super

80493.

INCERT ExemplarIl of a bacteria triples itself every hour. How many cells will be there after 9 hour, twe start with 3 cells? Express the answer using exponents.itัะตThenitially we start with

Answer»

Number of hours = 9. It triples every hours. So, at the end of 9 hours = 3^9

Please hit the like button if this helped you

Super

Discussion

80494.	9l Aleekais now 12 years old and Ravina is 24 years old. How many years ago was Ravina threetimes as old as Aleeka?When vou diid
Answer»

Discussion

80495.	C25 (D)5Sumana spent 1hour doing hehomework and hour to practisesinging If she played for 1 hour, howmany minutes did she spend for allthese activities?
Answer»

Discussion

80496.	レExercise SA shopkeeper bought a suit case for480 and old it for540 Findnercent?
Answer» C. P. of the suit case is rupees 480 .S.p. of the suit case is rupees 540 . Therefore gain is = S. p. - C. p.= rupees 540 - 480 .= rupees 60 . Therefore gain per cent is= gain / c. p. * 100 %= 60 / 480 *100 %= 100 / 8= 12 . 5 % . (Answer)

80496.

レExercise SA shopkeeper bought a suit case for480 and old it for540 Findnercent?

Answer»

C. P. of the suit case is rupees 480 .S.p. of the suit case is rupees 540 .

Therefore gain is = S. p. - C. p.= rupees 540 - 480 .= rupees 60 .

Therefore gain per cent is= gain / c. p. * 100 %= 60 / 480 *100 %= 100 / 8= 12 . 5 % . (Answer)

Discussion

80497.	cos theta barabar kya hota hai formula
Answer»

Discussion

80498.	1. Add the following:(a) 7 km 750 m and 2 km 575 m(b) 4 kg 500 g and 9 kg 825 g(c) 5/925 m/ and 7 / 650 ml(d) 10 m, 3 m 85 cm and 6 m 25 cm(e) 8 kg 700 g. 975 u and 2 kg 350 g2 Subtract:(a) 7 km 625 m from 12 km 300 m(b) 3 kg 650 g from 8 kg(c) 5/850 ml from 107350 m/(d) 9 m 60 cm from 15 m(e) 13 / from 25 / 765 ml
Answer» 7000m+750m+2000m+575m=10325m Ask one question at the time simplify :- now; km ---------> m (meter) know : 1km = 1000 m Ex:- a) 7 km 750 m + 2 km 575 m => 7000+750 + 2000+ 575 => 7750 + 2575 => 10325 🅰️ns so follow this rule and you could have to solve every question Hope it is helpful for you 7.750km+2.575km=10.325km4.500kg+9.825kg=14.325kg5.925l+7.650l=13.575l10m+3.85m+6.25m=20.1m8.700kg+0.975kg+2.350kg=12.025kg a)10325mb)14325mc)13575m 7+750+2+575=1325=1330 fractions 31 by 6 316

80498.

1. Add the following:(a) 7 km 750 m and 2 km 575 m(b) 4 kg 500 g and 9 kg 825 g(c) 5/925 m/ and 7 / 650 ml(d) 10 m, 3 m 85 cm and 6 m 25 cm(e) 8 kg 700 g. 975 u and 2 kg 350 g2 Subtract:(a) 7 km 625 m from 12 km 300 m(b) 3 kg 650 g from 8 kg(c) 5/850 ml from 107350 m/(d) 9 m 60 cm from 15 m(e) 13 / from 25 / 765 ml

Answer»

7000m+750m+2000m+575m=10325m

Ask one question at the time

simplify :- now; km ---------> m (meter) know : 1km = 1000 m

Ex:- a) 7 km 750 m + 2 km 575 m => 7000+750 + 2000+ 575 => 7750 + 2575 => 10325 🅰️ns

so follow this rule and you could have to solve every question

Hope it is helpful for you

7.750km+2.575km=10.325km4.500kg+9.825kg=14.325kg5.925l+7.650l=13.575l10m+3.85m+6.25m=20.1m8.700kg+0.975kg+2.350kg=12.025kg

a)10325mb)14325mc)13575m

7+750+2+575=1325=1330

fractions 31 by 6 316

Discussion

80499.	12. At a petrol pump, 23L 400 mL of petrol was filled in a car, 6L 250 mL was filled in a two-wheelerand 9L 375 mL in an autorickshaw. How much petrol was sold?
Answer» Petrol filled in car = 23 L 400 mlPetrol filled in two wheeler = 6 L 250 mlPetrol filled in autorickshaw = 9 L 375 ml Total petrol sold = (23+6+9) L + (400 + 250 + 375) ml= 38 L 1025 ml (1025 ml = 1L 25 ml) = 39 L 25 ml

80499.

12. At a petrol pump, 23L 400 mL of petrol was filled in a car, 6L 250 mL was filled in a two-wheelerand 9L 375 mL in an autorickshaw. How much petrol was sold?

Answer»

Petrol filled in car = 23 L 400 mlPetrol filled in two wheeler = 6 L 250 mlPetrol filled in autorickshaw = 9 L 375 ml

Total petrol sold = (23+6+9) L + (400 + 250 + 375) ml= 38 L 1025 ml (1025 ml = 1L 25 ml) = 39 L 25 ml

Discussion

80500.	A started a business by investing Rs 3500. After5 month B joins with A. After one year theprofit is distributed in the ratio 2:3. What isthe amount invested by B?
Answer» Thanks

Discussion

Explore topic-wise InterviewSolutions in .

Question mumbers 13 to 22 carry 3 marks each13· Three bells toll at intervals of 9, 12, 15 minutes respectively. If they start tolling together, after what timewill they next toll together ?

uibel l live digits exactly divisible by 9, 12, 15, 18 and 245. Three bells toll at intervals of 9, 12, 15 minutes. If they start tolling together, after whatbwill they next toll together?

\frac { ( 7 + 3 \sqrt { 5 } ) } { ( 3 + \sqrt { 5 } ) } - \frac { ( 7 - 3 \sqrt { 5 } ) } { ( 3 - \sqrt { 5 } ) }

\frac { 7 + 3 \sqrt { 5 } } { 3 + \sqrt { 5 } } - \frac { 7 - 3 \sqrt { 5 } } { 3 - \sqrt { 5 } } = a + b \sqrt { 5 }

Read and write the names of the number by separating the digits according to the period of the digits. 93, 375, 4367, 753684

find the value of Jax Jata a

ngos nou willen can measure the three dimensions of the rooms exactlyA circular field has a circumference of 360Km. Three cyclists start together and can cycle48, 60 and 72 Km a day, round the field. When will hey meat again?

9. Subtract the sum of 3and 39from the sum of 53and 4 .9

) Every rational number is a whole number

if 4 metre is equas to 400 cm then 8 metre is equals to ?

1.Solve: 5(x+5)+6 (y -3)-49(x-1)+4 (y-2) = 4(A) x = 10, y =-9(C) x 5, y-6(B) x=9, y=-10(D) x-6, y =-5

1. A ladder 13 m long rests against a verticalwall. If the foot of the ladder is 5 m from thefoot of the wall, find the distance of the otherend of the ladder from the ground.

2.Simplify each of the following expressions:

64425 Mein add kiya Jayega ki 2 lakh hoga

The distance between two stations is300 km. Two motorists startsimultaneously from their stations andmove towards each other. The speed ofOone of them is 7 km/hr more than thespeed of the other. If the distancebetween them after 2 hours of their startis 34 km. Find the speed of eachmotorist?

Triple b less 4 equals 8.

Check Your Progress 23.2Let ALetQ. 1. A ladder leaning against a vertical wall Nowmakes an angle of 60 with the ground. Thefoot of the ladder is at a distance of 3 m fromthe wall. Find the length of the ladder.AnsSol. Let AC is a ladder.ACB = 60Â° andor

State whether the following statements are true or false. Justify your answers0) Every irrational number is a real number.

A ladder leaning against a vertical wall, makes an angle of 60 with the ground. Thefoot of the ladder is 3.5 m away from the wall. Find the length of the ladder.

Simplify each of the following expressions:

500 rupees ka 5% ki dar se 2 year ka sadharan beyaj kya hoga

* Stem french wolus. f *

7· aft sin 282一司, 게cos (75°-0)2

Example 1 : Are the following statements true or false? Give reasons for your answers.(1) Every whole number is a natural number,

rise the following expressions completely. (AS-I2) 3x 3) 282 21m1 4)

Q48 The LCM of 47, 141 and 188 is:(A) 564(C) 376(B) 282(D) 424

6. A lotus is 2m above the water in a pond. Due to wind the lotus slides on the side andonly the stem completely submerges in the water at a distance of 10m from theoriginal position. Find the depth of water in the pond.

x2.72m.6. A lotus is 2m above the water in a pond. Due to wind the lotus slides on the side andonly the stem completely submerges in the water at a distance of 10m from theoriginal position. Find the depth of water in the pond.

5. One day Sumit bought 2 kg 390 g orange and 5 kg 685 g papaya. Find the toemass of fruits bought by him.

howmuctlke 36 cakes,: Sumait buys the following items to make a mixed vegetable curryTomatoPeasCabbageCapsicumPotatoBeansWeight2 kg250 g2 kg1 k500 g250 gWhat is the total weight of theitems (in kg)?

8. The present ages of Mahesh and his father are 20 years and 50 years respectively. How manyyears ago was Mahesh's father 4 times as old as Mahesh then?Solution

The ratio of the ages of a man and his wife is 4:3.After 4 years, this ratio will be 9: 7. If at the timeof marriage, the ratio was 5:3, then how manyyears ago were they married?ESTATE

5. Sonali had 735 She got # 16 from her mother and spent 282 on food. Howmuch money is left with her?

ofrequired?9. Arun bought 2 kg 500 g of onions, 1 kg 250 gpotatoes, 2 kg 15 g of tomatoes and 750 g of othermixed vegetables. How much vegetables altogetherdid he buy?

7. From the sum of Sx5x+2 and-x2 - Sx +6, subtract 4x2-9x +72 na G- 412x- 6xu then

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INCERT ExemplarIl of a bacteria triples itself every hour. How many cells will be there after 9 hour, twe start with 3 cells? Express the answer using exponents.itัะตThenitially we start with

9l Aleekais now 12 years old and Ravina is 24 years old. How many years ago was Ravina threetimes as old as Aleeka?When vou diid

C25 (D)5Sumana spent 1hour doing hehomework and hour to practisesinging If she played for 1 hour, howmany minutes did she spend for allthese activities?

レExercise SA shopkeeper bought a suit case for480 and old it for540 Findnercent?

cos theta barabar kya hota hai formula

12. At a petrol pump, 23L 400 mL of petrol was filled in a car, 6L 250 mL was filled in a two-wheelerand 9L 375 mL in an autorickshaw. How much petrol was sold?

A started a business by investing Rs 3500. After5 month B joins with A. After one year theprofit is distributed in the ratio 2:3. What isthe amount invested by B?

INCERT ExemplarIl of a bacteria triples itself every hour. How many cells will be there after 9 hour, twe start with 3 cells? Express the answer using exponents.itัะตThenitially we start with