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Answers for frequently asked puzzles in Interview.

Ans 1) As you can only open the door once. So let's take 3 switches as A, B, C, and let's take bulb as X, Y, Z.So first turn on switch A for some time let's say 4-5 minutes then switch it off. Now turn on any other switch from B or C. Now enter the door and see the bulbs. The one which is on corresponds to the switch you just turn on, Now touch the bulbs, the bulb which is hot corresponds to the switch you turn on first that is A and the bulb which is cold corresponds to the switch you didn't turn on.

Ans 2) Divide gold bar into 3 parts 1 bar,2 bar, and 4 bar by making 2 cuts

day 1- Give away 1 bar
day2- Take away 1 bar and give 2 bar
day 3- Give again 1 bar (2+1=3)
day 4- Take away 1 and 2 bar and give 4 bar
day 5- Give 1 bar (4+1=5)
day 6- Take away 1 bar and give 2 bars (4+2=6)
day 7 -Give 1 bar (4+2+1=7)

Ans 3) This question is asked in an interview to check whether you can give more than one answer for one question (basically they wanted to check whether you have more than one approach for one problem I guess). So you can give different answers like pipes and tubes are round so the manhole or round manhole can be easily rotated or rolled or something like that. Remember to tell at least something instead of telling you I don't know. They will appreciate that.


                 

Ans 4) Cut along Z-axis

Ans 5) As the bear is dropped its initial velocity will be 0 that is u=0.Now consider the equation
                 S=ut+at^2*0.5
                 a=2S/t^2
                 a=10m/secsq
Thus acceleration is g=10 which is only in the poles. South pole don't have bear so it should be North pole
and polar bears are there which are of white color.

Ans 6) (0!+0!+0!+0!+0!)!=5!=120

Ans 7) 24

Ans 8) Take 1 pill from the first 2 pills from the second and so on. Now put all the pills on scale and weight. If it is one less than expected weight then the contaminated pill is in first if it is two less than expected weight then the contaminated pill is in second and so on.

Rest two are simple physics questions I am sure everybody will be able to solve.

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Comments

  1. Anonymous31 March 2014 at 13:55

    Your answer to the gold bar doesn't make any sense.
    Day1: You give one gold bar.
    Day2: You are asking for Day1's gold bar. But what if he has already spent it?

    ReplyDelete
  2. progpuzzfreak2 April 2014 at 09:32

    Hello, Thanks for the good question!!..This puzzle was kind of incompleted. Actually here you put one condition in front of worker that he cannot spent any of the gold bar until he is fully paid. *EDITED*

    ReplyDelete

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