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  2. If n(A)=3 ; n(B)=3. Then find number of one one functions from A to B.
# Engineering

If n(A)=3 ; n(B)=3. Then find the number of one-to-one functions from A to B.

Answers (1)
L Lovekush Kumar Saini

The number of one to one functions is 3! because the max mapping to B is 3.

So,

3! = 3 x 2 x 1 = 6.

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