10 Puzzles asked in a placement interview

1.There are two person each having same amount of marbles in the begining and 1st person gains 20 more from the second person and he eventually lose two thirds of it during the play and now the second person has 4times marbles of what first person is having now.find how much marbles did each had in the beginning.

Ans(40 marbles) 3marks

2. There were two clock one is getting slow by two minutes/hr and another one is gaining 1 minute every hour and exactly after how many hours there two clock has a 1hr difference.

Ans(20hr)4marks

3.A taxi driver sum from Sakuntala devi it states that his cab number is divisible by the no 2,3,4,5,6 but it gives a remainder of 1 and when the number is divided by 11 it does not give any remainder

Ans(121)3marks

4.Four persons ed,frank, george,harry bring their wife to a party and they exchange each other wife while dancing
they give conditions like this betty is dancing with ed, dorothy dancing with alice husband,alice dancing with carols husband,frank was dancing with george's wife
(8 marks)
The answer:
wifes marriedto dancing with
alice george frank
betty harry ed
carol frank harry
dorothy ed george

5. Forgotten (5 marks)

6. Amy and other 4 sister each have different interests one studies a different language(spanish) one learns a different music instrument(harp) and another one has the habit of collecting (old stamps) u have to find each sisters interests with the followinf clues
1.One sister learns russian and has the habit of collecting old buttons.
2.One sister learns german and plays flute.
3.Anne collects coin4.andrea plays violin but does not learn french.
5.Slice learns piano
6.The girls learning piano has the habit of collecting butterfly
7.Then angela and the other sister who has the habit of collecting rocks go out for shopping.
during that period the sister learning piano stays inside home and
other one learning french also stays home and another sister learning guitar also stays home.

With all these condition u have to find out the following(8marks)

name amy anne andrea alice angela
instrument
language
collection
totally they have mentioned 4 languages,5music instruments and 5
different habits.

7.I didn't had a look at this problem it carries (7 marks)

8.There is a number which when added with 33/4 gives the same ans as multiplied with 33/4.(3 marks)

9. A man has 50 mangoes and place the 50 mangoes like this the distance between 1and 2 is 1 yard and the distance btn.
2&3 is 3yard and the distance btn. 3&4 is 5yard like this he increases the distance btn. mangoes in steps of two.
after arranging them like that and if he start picking them up how much yard he has to walk.(5 marks)

Ans(2401)

10.a man says that he gained 10 percent as profit in selling a suitable cloth material.he says if he had purchased the same one 10 percent cheaper than it was actual and if he had sold it for 20% profit he gets 25paise less.
Find at what price he sold the suit.
Ans(Rs12.50)

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