98971 + Interview Questions in Primary School in Math

1.	X+11/x+15=x+1/x+3 plz plz answe the question
Answer» Solution: =>X+11/x+15= x+1/x+3 => (x+11) (x+3)= (x+1)(x+15) [CROSS multiplication] => x^2+3x+11x+33= x^2+15x+x+15 => x^2+14x+33= x^2+ 16x+15 => 2X= 18 => x= 9 ____________________ hope it helps☺☺

Discussion

2.	if 112 litres of oil is to be filled equallly in bottles whose capacity is3.5 litres then find how many such bottles will be needed
Answer» 32approx.... if you LIKED it then PLEASE MAKE this BRAINLIEST

Discussion

3.	Abx(square+(ay-b)x-y
Answer» ANSWER: Step-by-step EXPLANATION:

3.

Abx(square+(ay-b)x-y

Answer»

ANSWER:

Step-by-step EXPLANATION:

Discussion

4.	Plzz solve this que as fast as u can
Answer» LET 2a+b be X then a QUADRATIC EQUATION will FORM :- x^2 +2x-8 Solve it.

Discussion

5.	if two positive integers A and B are written as a = x cube + y square lb equal x y cube x y are prime numbers then find the HCF of a and b
Answer» If two POSITIVE integers A and B are written as a = x CUBE + y SQUARE LB equal x y cube x y are prime numbers then find the HCF of a and b - 3470692.

Discussion

6.	What is soil erosion?
Answer» The removal of the TOP LAYER of the soil DUE the factors of the floods , strong wind etc. is CALLED soil EROSION !!

Discussion

7.	Do all living things eat the same kind of food why?
Answer» No all living things doesn't EAT same type of food. For ex:- HUMAN beings eat food LIKE pulses, fruits etc. While trees take CO2, sunlight etc to MAKE its food

Discussion

8.	The simple interest on Rs.8000 for 7/2 years at 6 percent per annum is what
Answer» S:i=p×r×t/100 =8000×6×84/100=40420

Discussion

9.	A number multiplied by 3/2 and then increased 5/4 gives 3/4 find the number
Answer» LET the NUMBER be X. a/q 3/2x+5/4=3/4 (6x+5)/4=3/4 4(6x+5)=12 6x+5=3 6x=3-5 x=-2/6=-1/3

Discussion

10.	Anyone?Can solve this
Answer» I THINK the ANSWER MAY be 31. Hope it is HELPFUL for you

Discussion

11.	if 2-root 5 + 3 + 2 root 5 - 4 + root 5 by 4 is equal to P + Q root 5 then the value of p and q are.
Answer» HEYA!! ##2-√5+3+2√5-4+√5/4=P+Q√5 ## 5-4+2√5/4=P+Q√5 ##1+2√5/4 =P+Q√5 HERE .. P =1/4 AND Q=2/4 hope this HELPS you ☺

Discussion

12.	If 30 pens cost at 750 how many pens will cost 1000
Answer» 40 PENS are bought in RS 1000 ok

Discussion

13.	A man travels by boat 36 km down a river and back in 8 hours . if the speed of his boat in still water is 12 km ler hours , find the speed of the river curtent
Answer» The SPEED of RIVER curtent is 3m/s

Discussion

14.	Plzzzzzz solve it see the attachment
Answer» It's not CLEAR . PLEASE SEND NICE PIC.

Discussion

15.	The value of k for which 2x*4 plzzzzz see the attachment
Answer» X-2=0 X=+2 p(x)= 2x^4+3x^3+2kx^2-3x-6 p(2)= (22)^4+(32)^3+(2K2)^2-32-6 4^4+6^3+4k^2-6-6 256+216+16k-0 472+16k-0 16k = 472 K = 472/16 k =29.5 (k = 29.5)

Discussion

16.	Using 8 in 8 time the ans is 1000 give me solution
Answer» 8 8 8 8 8 8 8 + 8 ----------------+ 1000 HOPE U GOT THE ANSWER NOW BRAIN LIST IT THANX write one TIME 8 in FIRST raw then 2times in2nd raw and 5 times in LAST one

Discussion

17.	Multiply 2525×25252525 show your full work in detail
Answer» Hi mate, In the above image is your ANSWER will full description. HOPE THIS IS HELPFUL FOR YOU PLEASE SELECT MY ANSWER IN BRAIN LIST IF YOU LIKE MY ANSWER.

Discussion

18.	Hey guys help me plz its urgent Q no 28,29,30
Answer» See 10 th NCERT FOR these types of QUESTIONS and rules. You can ALSO REFER RS AND RD

Discussion

19.	If 8/9 the multiplication )inverse of -9/8 ?why or why not
Answer» No only 9/8 if you WANT to do ADDITIVE INVERSE the you FIND only -8/9

Discussion

20.	A certain population of bacteria becomes (4÷3) times its initial population every day . A sample of 300 bacteria is taken for study . The expression becomes 300× (4÷3)^x models the number of bacteria in the sample after x days. Find the population (approx.)at the end of first day ,second day and third day . After which day will the population be more than three times of original ?
Answer» Given: The expression for POPULATION of bacteria after $x$ days is given by $\quad\quad N_{x}=300\times \left(\frac{4}{3}\right)^{x}$ To find: Population of bacteria at the end of first DAY second day third day and after which day, the population of bacteria will be more than three times of original. Solution: The expression for population of bacteria after $x$ days is given by $\quad N_{x}=300\times \left(\frac{4}{3}\right)^{x}$ Then the population of bacteria at the end of the first day is $\quad N_{1}=300\times \frac{4}{3}$ $\quad \boxed{\color{blue}{N_{1}=400}}$ The population of bacteria at the end of the second day is $\quad N_{2}=300\times \left(\frac{4}{3}\right)^{2}$ $\Rightarrow N_{2}=300\times \frac{16}{9}$ $\Rightarrow \boxed{\color{blue}{N_{2}\approx 533}}$ The population of bacteria at the end of the third day is $\quad N_{3}=300\times \left(\frac{4}{3}\right)^{3}$ $\Rightarrow N_{3}=300\times \frac{64}{27}$ $\Rightarrow \boxed{\color{blue}{N_{3}\approx 711}}$ Let, after $p-th$ day, the population of bacteria will be more than three times of original $\Rightarrow N_{p}>3\times 300$ $\Rightarrow 300\times\left(\frac{4}{3}\right)^{p}>3\times 300$ $\Rightarrow \left(\frac{4}{3}\right)^{p}>3$ $\Rightarrow p\:log\left(\frac{4}{3}\right)>log3$ $\Rightarrow p>\frac{log3}{\frac{4}{3}}$ $\Rightarrow p>3.82$ $\Rightarrow \color{blue}{p\approx 4}$ Therefore after $4$ days, the population of bacteria will be more than three times of original.

20.

A certain population of bacteria becomes (4÷3) times its initial population every day . A sample of 300 bacteria is taken for study . The expression becomes 300× (4÷3)^x models the number of bacteria in the sample after x days. Find the population (approx.)at the end of first day ,second day and third day . After which day will the population be more than three times of original ?

Answer»

Given:

The expression for POPULATION of bacteria after $x$ days is given by

$\quad\quad N_{x}=300\times \left(\frac{4}{3}\right)^{x}$

To find:

Population of bacteria at the end of

first DAY
second day
third day

and after which day, the population of bacteria will be more than three times of original.

Solution:

The expression for population of bacteria after $x$ days is given by

$\quad N_{x}=300\times \left(\frac{4}{3}\right)^{x}$

Then the population of bacteria at the end of the first day is

$\quad N_{1}=300\times \frac{4}{3}$

$\quad \boxed{\color{blue}{N_{1}=400}}$

The population of bacteria at the end of the second day is

$\quad N_{2}=300\times \left(\frac{4}{3}\right)^{2}$

$\Rightarrow N_{2}=300\times \frac{16}{9}$

$\Rightarrow \boxed{\color{blue}{N_{2}\approx 533}}$

The population of bacteria at the end of the third day is

$\quad N_{3}=300\times \left(\frac{4}{3}\right)^{3}$

$\Rightarrow N_{3}=300\times \frac{64}{27}$

$\Rightarrow \boxed{\color{blue}{N_{3}\approx 711}}$

Let, after $p-th$ day, the population of bacteria will be more than three times of original

$\Rightarrow N_{p}>3\times 300$

$\Rightarrow 300\times\left(\frac{4}{3}\right)^{p}>3\times 300$

$\Rightarrow \left(\frac{4}{3}\right)^{p}>3$

$\Rightarrow p\:log\left(\frac{4}{3}\right)>log3$

$\Rightarrow p>\frac{log3}{\frac{4}{3}}$

$\Rightarrow p>3.82$

$\Rightarrow \color{blue}{p\approx 4}$

Therefore after $4$ days, the population of bacteria will be more than three times of original.

Discussion

21.	write a pair of integers whose sum gives a negative integer zero an integer smaller than both of the integer and integer smaller than one of the integer and greater than both of the integer
Answer» Hey Friend ______________________ Here is your answer ______________________ •Pair of integer whose sum gives a NEGATIVE integer: (-) + (-) = (-) TAKE any no. In negative form = (-3) + (-7) = -10 •Pair of Integers whose sum gives ZERO : One of the no. must be in positive and other must be in negative ( But note that absolute value of the TWO no.s must be same) = (-3) + (+3) = -3 +3 =0 • Pair of integers whose sum is smaller than both of the integers : you can take any no. by visualising( It's better to take negative integer) = (-3) + (-7) = -3 -7 = -10 • Pair of integers whose sum is smaller than one of the integer : You can take any answer no. By visualising =(-5) +4 =(-1) • Pair of integers whose sum is Greater than both of the integers : You can take any no. ( It's Better to take a positive one) = 3 +7 =10 ________________________________ Thank you! Hope It helps !

Discussion

22.	Pls do it , it's urgent
Answer» I THINK the ANSWER is 4. Hope it is HELPFUL for you

Discussion

23.	Multiply by 3 to get the equivalent fraction of 3 by 4
Answer» 12 me SE are you RIGHT ANSWERRRRR

Discussion

24.	the four wheel of a carriage makes IT Solutions more than the rear wheel in going 1 when he meet the diameter of the force will be increased by 1 upon 4 its present time there any diameter of the Year will be increased by one fifth of its present time in the force will makes 4 revolutions more than the other boleyn going the same distance find the circumference of each wheel of the carriers
Answer» And the other SIDE of the most important THING is that the NEW YEAR to you and your FAMILY are well known for its accuracy of the year, and I will not

Discussion

25.	Plz give. proper. solution of. this question
Answer» Do by mind and by USING FORMULA

Discussion

26.	10% of x° is the complement of 40% of 2x
Answer» X° = 100° is the ANSWER

Discussion

27.	Plz guys solve this...I will be very thankful
Answer» On Equating the RHS we GET , 3(S8 - S4) => 3 { n/2 * [ 2A + (n-1)d ] - n/2 * [2a + (n-1)d ] } => Substituting 8 and 4 in n we get, => 3 { 8/2 * [ 2a + (8-1)d ] - 4/2 * [2a + (4-1)d ] } => 3 { 4 [2a + 7d] - 2[2a + 3d] } => 3 { 8a +28D - 4a - 6d } => 3 {4a +22d } => 6 { 2a + 11d } ( Taking 2 common} => 12/2 ( 2a + (12-1)d } (REARRANGING the terms) => S12

Discussion

28.	Draw the factor tree of the 125
Answer» SEE the IMAGE and ASK if there is any PROBLEM.

Discussion

29.	Find the square root of the following correct to 3 decimal places 2571 /7
Answer» <P>Answer:FIND the square root of the following (correct to three decimal places) 2571/7 ... To find : The square root of \frac{2571}{7} ... If (X+1) is one of the root of cubic POLYNOMIAL p(x)=x³-3x²-x+3;then find the other two roots The ... Step-by-step explanation:

29.

Find the square root of the following correct to 3 decimal places 2571 /7

Answer»

<P>Answer:FIND the square root of the following (correct to three decimal places) 2571/7 ... To find : The square root of \frac{2571}{7} ... If (X+1) is one of the root of cubic POLYNOMIAL p(x)=x³-3x²-x+3;then find the other two roots The ...

Step-by-step explanation:

Discussion

30.	Find the positive vakue of K for which tje equation X²+KX+64=0 and X²-8X+K=0 will have real roots.
Answer» HOPE IT WILL HELP YOU...,. :-)

Discussion

31.	1.Under what conditions is the square of a complex number x + iy(A) a real number.(B) an imaginary number.2.Can you consider the number 1 as a complex number?Give reason.3.A student got 1 = -1, by putting a = -1 and b = -1 in √(ab) = √a.√b, where did he commit the mistake?♣ Don't spam.♣ ♦ Otherwise you will be reported.
Answer» A) when any of X or y is zero B) when x=y 2) yes, here y=0 and x=1 and can be return as 1 + i0 3) you can't put -ve TERM in under root

Discussion

32.	What is the definition of angle
Answer» ANGLE is an area/region FORMED when 2 rays MEET at ONE point. .....

Discussion

33.	students of a school be made to stand in rows for drill if 3 students plus face reading in each row 10 more rows with required in 5 students more understanding in each row the number of rows was reduced by 10 find the number of students participating in Israel
Answer» 8student PARTICIPATING in ISRAEL. ....

Discussion

34.	Define remainder and factor theorem in simple languages...
Answer» In algebra, the polynomial remainder THEOREM or little Bézout's theorem is an application of EUCLIDEAN division of polynomials. It STATES that the remainder of the division of a polynomial by a linear polynomial is equal to. In particular, is a DIVISOR of if and only if a property known as the FACTOR theorem.

Discussion

35.	Draw the factor tree of 18
Answer» HOPE It HELPS U ..........

Discussion

36.	The quotitent when the place value of 6 in 5986 is divided by its face value
Answer» Place VALUE = 6 Face value = 6 the QUOTIENT when 6 divide by 6 is 1 . HOPE it helps.

Discussion

37.	Find 5 rational numbers between -4/5 and 3/35
Answer» It's easy just take out the LCM of 5 and 35 FIRST and then just make up and down equal the ANSWER will be COMING easily by that FORMULA which you have STUDIED

Discussion

38.	Ek varg ka chetrafal 575 varg metre to sq Kinare Ki lambai Kya Hogi
Answer» KINARE KI LAMBAI = √575 = 23.97

Discussion

39.	Rajkumar left one fifth of his property for his son one-fifth for his daughter and the remaining for his wife. if the wife's share in the property was worth ₹280000 find the total worth of Rajkumar's property.
Answer» Update "Rajkumar left ONE fifth of his PROPERTY for his son one-fifth of the remaining for his DAUGHTER and the remaining for his wife. if the wife's SHARE in the property was worth ₹280000 find the total worth of Rajkumar's property."

Discussion

40.	Sec 45/cos 30+cosec 30
Answer» SEE the image if the SOLUTION is WRONG tell me or if there is any DOUBT tell also tell me.

Discussion

41.	Draw a factor tree of 1 10
Answer» HOPE this HELPS U!!!

Discussion

42.	Draw a factort tree of 100
Answer» See the PIC and PLZ comment if there is any DOUBT in the SOLUTION or solution is wrong.

Discussion

43.	Draw the factor tree of 81
Answer» 333*3arevthe FACTORS of 81

Discussion

44.	Who is the greatest and smartest mathematician of all time
Answer» I THINK ARYABHATTA .......

Discussion

45.	Find a number such that when it is mulitipled by 7 and 17 is subtracted from the product the result is the same as when it is multiplied by 3 and 19 added to the product.
Answer» HOPE , this will HELP U

Discussion

46.	Please give me the answer urgently
Answer» See the pic and ASK if there is any DOUBT you can send me MESSAGE.

Discussion

47.	If 2/3 of a number exceeds it's 3/5 by 1, find the number
Answer» LET the number be x (2/3)x - (3/5)x=1 2x/3-3x/5=1 Take LCM, LCM is 15 2x/3×5/5 - 3x/5×3/3=1 10x/15-9x/15 = 1 (10x-9x)/15=1 1x=15 x=15 therefore, the number is 15. Hope it helps

Discussion

48.	Divide 45 into two parts such that one part is less than the other by 9.
Answer» LET X and y be the no. acc to QUESTION x=y+9 so x+y=36 and x=18 WHEREAS y=27

Discussion

49.	By adding 8 to twice a number, we obtain 50. Find the number.
Answer» LET the NUMBER be X ATQ, 2x+8=50 2x=50-8 2x=42 x=42/2 x=21

Discussion

50.	2x7-128x factorise it plzzzzzzz
Answer» ANSWER: X(2x6-128) Step-by-step EXPLANATION:

50.

2x7-128x factorise it plzzzzzzz

Answer»

ANSWER:

X(2x6-128)

Step-by-step EXPLANATION:

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

X+11/x+15=x+1/x+3 plz plz answe the question

if 112 litres of oil is to be filled equallly in bottles whose capacity is3.5 litres then find how many such bottles will be needed

Abx(square+(ay-b)x-y

Plzz solve this que as fast as u can

if two positive integers A and B are written as a = x cube + y square lb equal x y cube x y are prime numbers then find the HCF of a and b

What is soil erosion?

Do all living things eat the same kind of food why?

The simple interest on Rs.8000 for 7/2 years at 6 percent per annum is what

A number multiplied by 3/2 and then increased 5/4 gives 3/4 find the number

Anyone?Can solve this

if 2-root 5 + 3 + 2 root 5 - 4 + root 5 by 4 is equal to P + Q root 5 then the value of p and q are.

If 30 pens cost at 750 how many pens will cost 1000

A man travels by boat 36 km down a river and back in 8 hours . if the speed of his boat in still water is 12 km ler hours , find the speed of the river curtent

Plzzzzzz solve it see the attachment

The value of k for which 2x*4 plzzzzz see the attachment

Using 8 in 8 time the ans is 1000 give me solution

Multiply 2525×25252525 show your full work in detail

Hey guys help me plz its urgent Q no 28,29,30

If 8/9 the multiplication )inverse of -9/8 ?why or why not

write a pair of integers whose sum gives a negative integer zero an integer smaller than both of the integer and integer smaller than one of the integer and greater than both of the integer

Pls do it , it's urgent

Multiply by 3 to get the equivalent fraction of 3 by 4

Plz give. proper. solution of. this question

10% of x° is the complement of 40% of 2x

Plz guys solve this...I will be very thankful

Draw the factor tree of the 125

Find the square root of the following correct to 3 decimal places 2571 /7

Find the positive vakue of K for which tje equation X²+KX+64=0 and X²-8X+K=0 will have real roots.

What is the definition of angle

students of a school be made to stand in rows for drill if 3 students plus face reading in each row 10 more rows with required in 5 students more understanding in each row the number of rows was reduced by 10 find the number of students participating in Israel

Define remainder and factor theorem in simple languages...

Draw the factor tree of 18

The quotitent when the place value of 6 in 5986 is divided by its face value

Find 5 rational numbers between -4/5 and 3/35

Ek varg ka chetrafal 575 varg metre to sq Kinare Ki lambai Kya Hogi

Rajkumar left one fifth of his property for his son one-fifth for his daughter and the remaining for his wife. if the wife's share in the property was worth ₹280000 find the total worth of Rajkumar's property.

Sec 45/cos 30+cosec 30

Draw a factor tree of 1 10

Draw a factort tree of 100

Draw the factor tree of 81

Who is the greatest and smartest mathematician of all time

Find a number such that when it is mulitipled by 7 and 17 is subtracted from the product the result is the same as when it is multiplied by 3 and 19 added to the product.

Please give me the answer urgently

If 2/3 of a number exceeds it's 3/5 by 1, find the number

Divide 45 into two parts such that one part is less than the other by 9.

By adding 8 to twice a number, we obtain 50. Find the number.

2x7-128x factorise it plzzzzzzz