If you know the answer to every question but one, the teacher will call on you to answer that one. I'm learning this rule all over again.

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If you know the answer to every question but one, the teacher will call on you to answer that one. I'm learning this rule all over again.

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Corollary: Never, ever leave *one* question unstudied. Stop at N minus 2 if you must :)

Is there asymmetry with respect to knowledge of answers? That is, what happens when exactly 1 (of N, where N > 1) question is studied?