4 If A – {1, 3, 5, 7, 97 B = {1, 2, 3, 4, 5, 6, 7, 8 }

AOB

# 4 If A – {1, 3, 5, 7, 97 B = {1, 2, 3, 4, 5, 6, 7, 8 }

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Step-by-step explanation:Given, A={1,3,5,7}

and B={1,2,3,4,5,6,7,8}

Here, n(A)=4 and n(B)=8

Thus number of one-one function from A into B

=

8

P

4

=8.7.6.5=1680