Surprise quiz sometime during the week

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Reference no: EM13277453

A teacher announces there will be a surprise quiz sometime during the week. The students argue it can't be on Friday because if the teacher waits until the last day it won't be a surprise anymore. Once they know it can't be Friday they argue by the same reasoning that it can't be Thursday either. What is wrong with this logic?

Reference no: EM13277453

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