Puzzle: Which Bottle Has The Contaminated Tablets?

Ankita Katdare

Ankita Katdare

@abrakadabra • Oct 26, 2024
You have 5 bottles of tablets. Each tablet weighs 10 grams, except for contaminated tablets contained in one bottle, where each tablet weighs 9 grams.

Given a scale, how could you tell which bottle had the contaminated tablets in just one measurement?
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  • silverscorpion

    silverscorpion

    @silverscorpion-iJKtdQ • Dec 2, 2011

    Take 1 tablet from the first bottle, 2 from the second, 3 from the third and so on.

    Weigh them all. Ideally, the weight should be (1+2+3+4+5)*10 = 150 grams

    If the total weight is 149 grams, then bottle 1 is defective.
    If it's 148, bottle 2 is defective, and so on. 😀
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