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True-false exam: A section of an exam contains four true-false questions. A completed exam paper is selected at random, and the four answers are recorded.

True-false exam:A section of an exam contains four true-false questions. A completed exam paper is selected at random, and the four answers are recorded. Round your answers to four decimal places if necessary.

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Assuming the outcomes to be equally likely, find the probability that all the answers are "False."

The probability that all the answers are "False" is

.

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