Question: Consider sets A and B, with |A| = 7 and |B|=3 a). How many relations are there for A to B? b). How many functions

Consider sets A and B, with |A| = 7 and |B|=3

a). How many relations are there for A to B?

b). How many functions are there from A to B?

c). How many injective functions are there from A to B?

d). How many surjective functions are there from A to B?

Now repeat the above four questions with |A| = 3 and |B| = 7

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