Aptitude Interview Questions
There are three people A, B, C. Liars
are of same type and Truth speaking people are of same type. Find out
who is speaking truth and who is speaking false from the following
statements:
a) A says: B is a liar.
b) B says: A and C are of same type.
Ans: lets assume A is speaking truth. It means B is a liar then it means
A and C are not of same type.
in a race u drove
1st lap with 40kmph and in the second lap at what speed u must drive so
that ur average speed must be 80kmph.
Ans: its impossible! if u drove the first lap in 40 kmph, its impossible
that the
average speed of both the laps is 80kmph.
for eg. consider one lap distance = 80km.
time req. to cover 1 lap = 80km/40kmph = 2 hrs.
if the avg. speed is 80kmph, then the total time
would have taken = 160kms/80kmph = 2 hrs.
same is the case with any other distance u consider. so the avg to be
80kmph is impossible
You have to draw 3
concentric circles with a line passing thru their center without lifting
hand.
Ans: Start the line complete one circle move inside circles along the
line and then draw second circle. Like wise rest.
A rectangular paper
is there. At a corner a rectangular size paper is taken from it. Now you
have to cut the remaining paper into two equal halves.
Ans: try it on the paper. You must fold the part that has complete paper
and select Half of it and then fold the part that cut and selects half
of it and then cut along the folding.
Value of (x-a)(x-b).
. . . (x-z)
Ans: 0 as there's X-X term
There are 9 coins. 8
are of 1 gm and 1 is of 2 grams. How will you find out the heavier coin
in minimum number of weighing and how many weighing it will need?
Ans: 2 weighing ( Divide the number of coins into 3 parts at each
weighing)
If a bear walks one
mile south, turns left and walks one mile to the east and then turns
left again and walks one mile north and arrives at its original
position, what is the color of the bear.
ANS. The color of the bear is trivial. The possible solutions to it are
interesting. In addition to the trivial north pole, there are additional
circles near south pole. Think it out.
Given a rectangular
(cuboidal for the puritans) cake with a rectangular piece removed (any
size or orientation), how would you cut the remainder of the cake into
two equal halves with one straight cut of a knife?
ANS. Join the centers of the original and the removed rectangle. It
works for cuboids too! BTW, I have been getting many questions asking
why a horizontal slice across the middle will not do. Please note the
"any size or orientation" in the question! Don't get boxed in by the way
you cut your birthday cake :) Think out of the box.
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