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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 80901. |
(a) 4 days(b) 12 days ()43. 100 villagers repaired 4 rd of a broken bank of a river in 6 hours. More villagersjoin the repairing and complete the work in next 2 hours working at the samerate. the number of new villagers involved is(a) 30(d) 50(SSC, Tier-1, 19.6.2011)(b) 40(c) 45 |
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| 80902. |
are needed to ull 3,400 34.11. UITWorking 4 hours daily, Swati can embroid 5 sarees in 18 days. How many dayswill it take for her to embroid 10 sarees working 6 hours daily?in an interest of 100 in 6 months. |
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Answer» 18 days used for 6 hrs |
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| 80903. |
nd the surface area o14cmOesurfaceareaofasphereof diameter.(ii) 21 cm(iii) 14cm, Fitotal surface area of a hemisphere of radiuym) 35m |
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Answer» area=4πr^2i. d=14cmr=14/2=7cma=4×π×7^2=615.75cm^22. d=21cmr=10.5cma=4×π×10.5^2=1385.44cm^23. 35mr=17.5ma=4π×17.5^2=3848.45m^2 |
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| 80904. |
Calculate Median of the following distribution of data:Class interval:Frequency:130-10 10-30 30-60 60-80 80-90515308214, Find out Median hourly wage |
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| 80905. |
480 I H. M. Mathematics (Class 10)Example 5. Using the assumed-mean method, find the mean of the following dataClass intervalFrequency0-1010-2020-3030-4040-50121310INCERT |
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Answer» thnx |
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| 80906. |
MATHEMATICS/f60% people in a city like cricket, 30% like football and the remaining likegames, then what per cent of the people like other games? If the total numbpeople is 50 lakh, find the exact number who like each type of game.6er |
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| 80907. |
10122. The mean of the following frequency distribution is 25. Find the value of p.Class interval 0-1010-20640-5020-301030-40Frequency3. lf mean of the following date i 44 C |
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Answer» 975+p/27+p=36.111.... |
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| 80908. |
a.What should be added to the polynomial x -5x + 4, so that 3 is the zero of the polynomialtlu divisihle hy 4x4x +1, then find the |
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Answer» Let k be added to the polynomial. Given Equation is p(x) = x^2 - 5x + (4 + k). If 3 is the zero of the polynomial, then the equation will become p(3) = 0 p(3) = (3)^2 - 5(3) + (4 + k) = 0 9 - 15 + 4 + k = 0 - 6 + 4 + k = 0 -2 + k = 0 k = 2. |
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| 80909. |
2.15. The population of a town increas 925%annuallyfits present population is 120000 vit be after 5 years? |
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Answer» Present Population=120000One year later increase on population = 25÷100×120000 = 30000After one year population=120000+30000 = 150000After 2nd year population increase= 25÷100×150000=37500After 2nd year population = 150000+37500 ; =187500After 3rd year population increase = 25÷100×187500 =46875After 3rd year population = 187500+46875 =234375After 4th year population increase = 25/100×234375=58694Population on 4th year=234375+58394=292769After 5 years population increase = 25/100×292769=73192Population on 5th year=292769+73192 =365961Ans) Population after 5 years is 365961.
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| 80910. |
Derivatives of (x+ycosx) |
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| 80911. |
2. 12 men working 8 hours a day complete a pieceof work in 10 days. To complete the same work in 8days, working 15 hours a day, how many men areneeded? |
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Answer» M×T=W12×8×10=Wmen×15×8=Wso men=(12×8×10)/(15×8)=8so 8 men are needed. |
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| 80912. |
If 30 labourers working 7 hours a day can finish a piece of work in 18 days, how many labourers working6 hours a day can finish it in 30 days? |
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Answer» As 30 labours complete work in 18*7 hours=126 hours let x labours nedded to complete work in =6*30=180hours This is case of inverse variation, So, 30*126=x*180 x=30*126/180=21 labours |
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| 80913. |
24 workers working 8 hours a day can finished a piece of work in 10 days. Find the number of workers required to finish the work in 6 days working 10 hours a day. |
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| 80914. |
If 40 men can build a wall 300 m long in 12days working 6 hours a day, how long will ittake 30 men to build a similar wall 200 m longworking 8 hours a day? |
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| 80915. |
8. The dimensions of a cell phone are 544inches by 2.64 inches by 0.27 inches. Insquare inches, what is the surface area of thephone? |
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Answer» Surface area of cuboidal phone= 2(lb+bh+hl)=2((5.44*2.64)+(2.64*0.27)+(0.27*5.44))=2(14.36+0.71+1.47)=2*16.54 =33.08 sq. inches |
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| 80916. |
Find the value of "x" if mode of the following data is 5. Find thex.Exa(1)2, 4,3, 5,4, 5, 6, 4, x, 7,5 |
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| 80917. |
P(x)=3x⁴-6x²-8x-2,g(x)=x-2 |
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Answer» hit like if you find it useful |
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| 80918. |
Mr. Gupta earns Rs 25,699 per month. How much will hĂŠ earn in 3 years? |
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Answer» 3×12=36monthsper month income= 25699than total income of 36 month's= 36×25699=₹925164./00 |
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| 80919. |
47. Draw a histogram and frequency polygon for the following daiaCiass Interval Frequency30-4040-5050-6060-7070-8080-90104 |
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Answer» like this question |
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| 80920. |
In a group of 100 people, 60 people like to play cricket, 20 people like to play bothcricket and Tennis. How many people like to play Tennis but not cricket?(See Lesson - 1) |
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Answer» Given:-In a group of 100 people ,60 people like to play cricket, 20 people like to play both cricket and tennis. =>Number of people who like to play tennis but not cricket=100-(60+20)=20 |
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| 80921. |
ExampleDegree of apolynomialName of theetc.polynomialNot defined Zero polynomial034ZeroConstant polynomial-12; 5; etcx -12;-7x + 8; ax + b etc.Quadratic polynomialCubic polynomial233x3-2x + 5x + 7 |
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Answer» thank u |
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| 80922. |
Find the value of x for which the function f(x) = x/2+2/x !=0 is strictly increasing or strictlydecreasing. |
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Answer» GIVEN function is f(x) = x/2 +2/x so, f'(x) = 2(-1/x²) +1/2 = 1/2-2/x² for the function to be strictly increasing f'(x) >0 => 1/2-2/x² >0=> 1/2> 2/x² => x²> 4 ..... so x belongs to (-∞,-2) U (2,∞) and hence it will be strictly decreasing in (-2,2) |
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| 80923. |
is an increasing function of oence yEXERCISE 8.3ithout using derivatives, show that:fx)-ax + b, where a and b are constants and a > 0 is a strictly increasing function for allvalues of x.fx)- a is a strictly increasing function on [0, co).i)fun) 2-3r is a strictly decreasing function on R. |
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| 80924. |
eena bought the following articles from a general store:(1) 1 tie costingて250 with ST ) 6%(ii) Medicines costingて625 with SI. 4%(iii) Cosmetics costingて430 with ST 10%(iv) Clothes costing?! 175 with ST 8%calculate the total amount to be paid by Reena.2. |
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| 80925. |
12 carpenters make 460 chairsin 24 days working 6 hours a day.Then how many chairs can bemade by 18 carpenters working8 hours per day in 36 days? |
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| 80926. |
one kilogram of butter for rs476 which includes 12percent GST. find thw amount of GST paid. |
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Answer» =476 * 12 %=476*12/100=476*0.12=57.12 rs |
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| 80927. |
45 12.5 b3. It rained 80 mm in first 20 days of April. What would be the total rainfall in AprilT Thül for aof 48 hours. If she was absent for 6 houas 540 for a |
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Answer» In 10 days rainfall will be 80/2 = 40mm So, in the month it will be 40*3 = 120 mm |
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| 80928. |
A Cellphone Compnany fixedthe price of a cellphone as Rs 4500.A dealer purchased cellphone on which he paid 12% GST additionally. How much did the dealer paid as GSTWhat is the purchase price of Cellphone?4% sales tax is add |
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| 80929. |
4A dealer buys an article at a discount of 30% from the wholesaler, the marked pricebeing 6000. The dealer sells it to a consumer at a discount of 10% on the markedprice. If the sales are intra-state and the rate of GST is 5%, find(1) the amount paid by the consumer for the article.(in) the tax (under GST) paid by the dealer to the State Government.(iii) the amount of tax (under GST) received by the Central Government. |
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Answer» if my answer is correct please send original answer and heart |
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| 80930. |
Findthe mean and mode for the following data:Classes |Frequency410 20 20-30 30-40 40 50 50 60 60-70 70-801012 104 |
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Answer» Mode = l1 + (f1-f0) ------------ ×h (2f1 -f0-f2) = 40 + (12-10)(10) -------------------- (24-10-10) = 40 + 5 = 45 CI. f. x. xf10-20 4 15. 6020-30 8 25. 20030-40 10 35. 35040-50 12 45. 54050-60 10 55. 55060-70 4 65. 26070-80 2 76. 152summation of xf= 2112summation of f=50mean = 2112/50=42.24 |
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| 80931. |
7. The number of people who travelled by Delhi Metro in the third week of a month of April was 5,32,640In the second week, the percentage increase was 4% and in the first week, it was 6%. How many peopletravelled in the first week of the April? |
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| 80932. |
If the polynomial 6x4 +8x3+17x2 +21x +7 is divided by another polynomthe remainder comes out to be ax + b, find a and lb.CBSE 2009 |
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Answer» thanks for the answer |
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| 80933. |
when a polynomial 6x⁴+8x³+21x²+21x+7 is divided by another polynomial 3x²+4x+1 the remainder is in the form ax+b find a&b |
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| 80934. |
3 A man earns 12,000 and spends 10,500. If he saves rest of the money,percentage of his savings. |
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Answer» 12000-10500/1200012.5 percentage |
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| 80935. |
A man earns 700 per month. He spends 65% of his earnings. How much does he spend every month? |
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Answer» He saves 35 percentage (100-65) percentage of the earning700*35/10035*7= 245 ruppes Please like the solution 👍 ✔️ |
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| 80936. |
practical gematory |
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Answer» Question you have submitted is incomplete. Please post a complete question. |
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| 80937. |
SECTION --AM.COlfā= 3 4 - 5 k is vector in space them al isal 52b) 25Td) 32 |
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Answer» magnitude of a is √3^2+4^2+5^2=√9+16+25=√50=5√2units please like my answer |
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| 80938. |
Aladderhas rungs 25 cm apart.(see Fig. 5.7). The rungs decreaseuniformly in length from 45 cm at thebottom to 25 cm at the top. If the top andthe bottom rungs are 2m apart, what isthe length of the wood required for therungs? |
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| 80939. |
Chetana Store paid total GST of 1,00,500 at the time of purchase and collectedGST 1,22,500 at the time of sale during 1st of July 2017 to 31st July 2017, Findthe GST payable by Chetana Stores. |
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Answer» GST payable by Chetana store = Output tax – input tax=1,22,500 – 1,00,500 =₹22,000∴GST payable by Chetana store = ₹22,000 |
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| 80940. |
If zcos θi sin θ, show thatz" +--2 cos 3θ and z[April 2006, April 2008 (AEI/BM/...), Oct. 2009 |
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Answer» Using De Moviers theoremz^n=(cosA+isinA)^n=cosnA+isinnA1/z=cosA-isinAhence1/z^n=(cosnA-isinnA)..using Demovier theoremHencez^3+1/z^3=cos3A+isin3A+cos3A-isin3A=2cos3Asimilarlyz^3-1/z^3=cos3A+isin3A-cos3A+isin3A=2isin3A |
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| 80941. |
3. In a class test, the number of students passed in various subjects are given below.EnglishHindiMathematicsSubjectDrawing20Number of1525students passed10Taking the scale= 5 successful students, draw the pictograph.4. The number of fans sold by a shopkeeper during 6 months are given below:MonthMarch April May June JulyNumber of fans sold 30 40 60 50August2030Taking the scale10 fans sold, draw the pictograph. |
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| 80942. |
elk bb)hlleaĺsab lelB2ç´IRA)(A)0-E+x-201 (W)0-1-xC+zXE (AI)0-til I+HB(!)I tellel pah leg |
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| 80943. |
Obtain the area of a circle of radius 'r' using integrationI Find the area enclosed by the circle r + r' by themethod of integrationAprilApril 2Oct. 2011 (D.E.C.E), Oct. 2015find the qrea bounded by the circle |
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| 80944. |
(2) Draw any circle. Draw two chords equidistant from the centre. Measure thelength of each chord. Draw conclusion. |
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| 80945. |
If the standard deviation of a variable x is 0,then the standard deviation of another variableax+bis |
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| 80946. |
4. The two legs of a right triangle are equal and the square of its hypotenuse is 50. Find thelength of each leg. |
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Answer» thanks |
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| 80947. |
- IV J U SU I thin 403. A man earns 90 000 a year and spends 75 600 a year. Find the ratiohis expenditure and his savings to his income |
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Answer» 21:4 will be right answer savings-15000,income:expenditure-1:2, saving -15000,income:expenditiure -1:2, |
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| 80948. |
_...... 7. sty by o o ooy e A PN ekt Sl N\ i ४११४४ St T YA) ऋ - 11: न ४ न 0 या वर्गसमीकरणाचे एक मूठ 9 आहे. तर ४ ची किंमत काढा.कल : |
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| 80949. |
A=2,3,5 B=3,5,6 LG SO (९06०- 2, 53/ %2 .%,S,ég» kG =T NS 5, |
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| 80950. |
ns in the statement form.y-1/2=12 |
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