Posted by **sia** on Tuesday, November 15, 2011 at 9:01pm.

You took a 5-question multiple choice quiz with 4 choices for each question. If you guess at random on each question, what is the probability that you get at least one question correct?

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**MathGuru**, Wednesday, November 16, 2011 at 9:31am
The easiest way to do this is use a binomial probability function table. You will need to determine n, x, and p. I'll give you a hint: x = 0. Once you determine P(0), then subtract the probability you find in the table from 1. That value will be your answer.

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