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Let A="{"1,2"]"a n d\ B={3,4} . Find the...

Let `A="{"1,2"]"a n d\ B={3,4}` . Find the total number of relations from A into B.

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Given, A = {1,2} and B = {3,4}.
Number of elements in set A = n(A)=2
Number of elements in set B = n(B)=2
Number of relations from A to B
=` 2^(n(A)×n(B))`
=`2^(2×2)=2^4=16`
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