Question

If n(A) = 3 and n(B) =5 then the number of possible one - one functions from A -> B is​

Answer 1

Answer:

60

Step-by-step explanation:

The amount of one-one functions from A->B is

a!/(a-b)!

So that is 5!/(5-3)!

5!/2!

5*4*3*2*1/2*1

So that is 5*4*3 = 60

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