Скачать или смотреть Computational Thinking with तराज़ू (Weighing Balance) | Computational Thinking

9 identical-looking weights, but exactly one is counterfeit.

(a) If you know the counterfeit is heavier, what is the fewest balance-scale weighings guaranteed to find it? 🎯 Can YOU find the heavier coin with just 2 weighings?
(b) If you don’t know whether the counterfeit is lighter or heavier, how many weighings are needed now?
(c) In general, with x weighings, what is the largest number of weights for which you can always find the counterfeit?

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