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  4. If n(A) = n(B) = m, then the number of possible bijections from A to B is

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Q. If $n(A) = n(B) = m,$ then the number of possible bijections from $A$ to $B$ is

COMEDKCOMEDK 2009Relations and Functions - Part 2

Solution:

We know that total number of one-one onto functions from $A$ to $B$ is $m!$