You have 4 jars of pills. Each pill is a certain weight, except for contaminated pills contained in one jar, where each pill is weight + 1. How could you tell which jar had the contaminated pills in just one measurement?
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1 comment:
Take 1 pill from Jar 1, 2 pills from jar 2, 3 pills from Jar 3.
Now put them on the weighing scale.
If weight = expected weight, jar 4 is answer
If weight = expected weight+1, jar 1 is answer
If weight = expected weight+2, jar 2 is answer
If weight = expected weight+3, jar 3 is answer
:)
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