A function is defined by mapping f : A → B such that A contains m elements and B contains n elements and m ≤ n then number of one one functions are _________

A function is defined by mapping f : A → B such that A contains m el

1.	A function is defined by mapping f : A → B such that A contains m elements and B contains n elements and m ≤ n then number of one one functions are _________
A.	ⁿCₘ x m!
B.	ⁿCₘ x n!
C.	0
D.	none of the mentioned
Answer» B. ⁿCₘ x n!

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