A function is defined by mapping f : A -> B such that A contains m ele – McqOptions

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1.	A function is defined by mapping f : A -> B such that A contains m elements and B contains n elements and m ‚Äö√Ñ√∂‚àö¬¢¬¨√ü n then number of one one functions are :$
A.	<sup>n</sup>C<sub>m</sub> x m!
B.	<sup>n</sup>C<sub>m</sub> x n!
C.	0
D.	none of the mentioned
Answer» B. <sup>n</sup>C<sub>m</sub> x n!

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