If f : A → B is a bijection and |A| = n, then the number of bijections from A to B is: A. n B. n² C. n! D. 2ⁿ Answer: C) n! Explanation: Number of bijections (one-one and onto functions) between two sets of size n is n!.

imo class 12 relations and functions

If f : A → B is a bijection and |A| = n, then the number of bijections from A to B is:

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If f : A → B is a bijection and |A| = n, then the number of bijections from A to B is:

Answer: C) n!

Explanation: Number of bijections (one-one and onto functions) between two sets of size n is n!.