The number of bijective functions from a set A containing 5 elements to itself is: A. 25 B. 120 C. 3125 D. 5 Answer: B) 120 Explanation: The number of bijections from a set of size n to itself is n!. For n = 5, it is 5! = 5 × 4 × 3 × 2 × 1 = 120.

imo class 12 relations and functions

The number of bijective functions from a set A containing 5 elements to itself is:

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The number of bijective functions from a set A containing 5 elements to itself is:

Answer: B) 120

Explanation: The number of bijections from a set of size n to itself is n!. For n = 5, it is 5! = 5 × 4 × 3 × 2 × 1 = 120.