Grail Insights Interview Questions

Two pipes C and D can fill a tank in 36 hours and 45 hours respectively. If both the pipes are opened simultaneously, how much time will be taken to fill the tank?
A. 10 hours
B. 20 hours
C. 30 hours
D. 40 hours

407 viewsAdmin Changed status to publish January 1, 2022Aptitude Pipes And Cisterns

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Why are manhole covers round?

197 viewsAptitude

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What decimal of an hour is a second
A. 0.0027
B. 0.047
C. 0.0270
D. 0.0720

430 viewsAdmin Changed status to publish December 24, 2021Aptitude Fractions and Decimals

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If A lends Rs.3500 to B at 10% per annum and B lends the same sum to C at 11.5% per annum then the gain of B in a period of 3 years is?

284 viewsAptitude Assistant Manager

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You have a bucket of jelly beans. Some are red, some are blue, and some green. With your eyes closed, pick out 2 of a like color. How many do you have to grab to be sure you have 2 of the same?

215 viewsGeneral Aptitude

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How many times does the 29th day of the month occur in 400 consecutive years?
A. 4487 times
B. 4457 times
C. 4497 times
D. 4447 times

142 viewsAdmin Changed status to publish December 30, 2021Aptitude Calendar

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You have given two blank faced dice… on both dice on each face you write any number you want from 0 to 9. now you are sitting and somebody comes and ask you the date of current month. you have show two dice to tell him the date. is it possible If yes how

183 viewsAptitude

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If 12 distinct points are placed on the circumference of a circle and all the chords connecting these points are drawn. What is the largest number of points of intersection for these chords?

228 viewsAptitude

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What is the least number to be subtracted from 696 to make it a perfect square?

185 viewsAptitude Assistant Manager

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A company pays 12.5% dividend to its investors. If an investor buys Rs.50 shares and gets 25% on investment, at what price did the investor buy the shares?
A. 5
B. 15
C. 25
D. 35

408 viewsAdmin Changed status to publish January 6, 2022Aptitude Stocks & Shares

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If a card is chosen from a standard deck of cards, what is the probability of getting a five or a seven?
A. 7/52
B. 8/52
C. 9/52
D. 10/52

189 viewsAdmin Changed status to publish January 3, 2022Aptitude Probability

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Find the odd man out. 23, 27, 36, 52, 77, 111, 162
A. 111
B. 222
C. 333
D. 444

221 viewsAdmin Changed status to publish December 30, 2021Aptitude Odd Man Out and Series

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A clock strikes 4 taking 9 seconds. In order to strike 12 at the same rate, the time taken is
A. 13 seconds
B. 23 seconds
C. 33 seconds
D. 43 seconds

230 viewsAdmin Changed status to publish December 31, 2021Aptitude Time and Clock

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Number of squares in a nxn grid

177 viewsAptitude

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Given a triangle ABC, how would you use only a compass and straight edge to find a point P such that triangles ABP, ACP and BCP have equal perimeters? (Assume that ABC is constructed so that a solution does exist.)

171 viewsGeneral Aptitude

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