Let A be a finite set having x elements and let B be a finite set havi – McqOptions

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1.	Let A be a finite set having x elements and let B be a finite set having y elements. What is the number of distinct functions mapping B into A.
A.	xy
B.	2(x + y)
C.	yx
D.	y! / (y - x)!
Answer» B. 2(x + y)

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