Question:medium

One mapping is selected at random from all mappings of the set S=1,2,3,…,n into itself. The probability that it is one–one is (3)/(32). Then the value of n is

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Probability of a one–one mapping on an n-set is (n!)/(nⁿ).

Updated On: Mar 19, 2026

3
4
5
6

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The Correct Option is B

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