Question

{(, ), ( 7, )} represents an identity function, then the value of a and b
are respectively
a) (5, 7) b) (5, 5) c) (7, 5) d) (7, 7)

Answer 1

Answer:

Given A={2,3,5},B={5,7}

A×B={(2,5),(2,7),(3,5),(3,7),(5,5),(5,7)}

The correct answer is 1.

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