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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?
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Answer / prabhu
Arrange 5 jar in order 1 to 5. Take 1 pill from 1st jar, 2
pills from 2nd jar llly up to 5 pills from 5th jar. Weight
all the pills (10+20+30+40+50=150gms). If the weight is
less by 1gm-1st jar holds the contaminated pills, if less
by 2 gms-2nd jar, 3 gms-3rd jar, 4gms-4th jar, 5gms-5th
jar.
| Is This Answer Correct ? | 60 Yes | 4 No |
Answer / guest
Answer #2
Is wrong. The question said you can only make one
measurement. You made 2 pin head. Can you count?
| Is This Answer Correct ? | 1 Yes | 1 No |
Answer / bharathi sundaravadivel
1]Suppose there are 5 jars and one physical balance,take any 4 out of them and place 2 jars on each side of the scale remains horizontal,then the remaining jar has the contaminated pills.
2] Else if the balance shifts to one side then the contaminated jar must be on the side which is lifted upwards.so remove one of the jars from either side. if the balance is still tilted to one side then the jar which is left on the side which is tilted is the contaminated jar.
3] If the balance becomes horizontal when you removed it, the jar you removed from the previously tilted jar is the required contaminated jar.
| Is This Answer Correct ? | 0 Yes | 10 No |
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