Trivia

Subject:
Not quite optimal
Response To:
Re: Correct! ()

Alex Y
Ed, I agree that after seven tries, you will be able to identify two good batteries. But the question was how many pairs you have to put in the flashlight to be assured of getting it to work, requiring 2 and 4 to be put in, the eighth pair.

But there is a way to do it (whether the question is identifying a good pair or having a good pair in the flashlight) with fewer than 7 or 8 pairs.

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