### Puzzle 1 : Take a chill pill!

This is one of the Microsoft interview questions, should be easier to answer as writing a code is not required. đŸ™‚

“You have 5 jars of pills. Each pill weighs 10 gram, except for contaminated pills contained in one jar, where each pill weighs 9 gm. Given a scale, how could you tell which jar had the contaminated pills in just one measurement?”

By scale I mean a digital weight measuring machine.

SOLUTION:

1. Mark the jars with numbers 1, 2, 3, 4, and 5.

2. Take 1 pill from jar 1, take 2 pills from jar 2, take 3 pills from jar 3, take 4 pills from jar 4 and take 5 pills from jar 5.

3. Put all of them on the scale at once and take the measurement.

4. Now, subtract the measurement from 150 ( 1*10 + 2*10 + 3*10 + 4*10 + 5*10)

5. The result will give you the jar number which has contaminated pill.

Solution Hidden

This was a simple one i guess!

Fiery got it correct. Thanks for hiding it. Let us see others coming up with the same. đŸ™‚

Well this is my solution…..I do not know how to hide this ( tell me someone)

Solution Hidden

Well I hope this is correct…..

Kanishk this is a nice thing u have started…..

correct answer arindam đŸ™‚

answer is?

I have added the answer to the main post. Congratulations to Fiery and Arindam for getting it right.

good one.. I never got it correct

Can i use binary operators in my solution??

Oh Sorry…. I posted in the wrong article

The idea is to form a different weight set from each jar in by picking consecutive numbers from each jar and weighing. If I got 149 then first jar is the one, if I got 148 then the second jar and so on.