Question: Faster the b/ let nyl be a positive integers and let X and Y be non - empty finite sets with / X 1 =

Faster

the b/ let nyl be a positive integers and let X and Y be non - empty finite sets with / X 1 = K and 1Y1= m . An n to 1 function : X -> y is a function such that for all yEY. there are exactly n distinct elements x,. ... Kne X with ( ,) = . .. = P ( an ) = y i) How many 2 to 1 functions : X - are there for x = 21, 2, 3, 4, 5 65 and Y= 21, 2, 39 2 1) Describe anecessary and sufficient ("if and only it) Condition in terms of k and m for the existence of an n to 1 function between & and Y. 111) If the conditions in (1) are sta satisfied. How many n to 1 functions are there from x toy

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