A) \[mn\]
B) \[{{2}^{n}}\]
C) \[{{2}^{m}}\]
D) \[{{2}^{mn}}\]
Correct Answer: D
Solution :
[d] As A contains m elements and B contains n elements, number of elements in A\[\times \]B is m.n the number of subsets of A\[\times \]B is \[{{2}^{mn}}\]. Every subset of A\[\times \]B is a relation from A to B. Thus, there will be \[{{2}^{mn}}\]different relations from A To B.
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