1.

Let A = {1, 2, 3,--------n} and B = {a, b, c], the number of functions from A to B that are onto is

Answer»

`3^(N)-2^(n)`
`3^(n)-2^(n)-1`
`3(2^(n)-1)`
`3^(n)-3(2^(n)-1)`

ANSWER :D


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