Question

A={1,2,3}Find the number of relations from A to A​

Answer 1

n(A)=3

n(A×A)=3×3=9

A×A={1,2,3}×{1,2,3}

={(1,1)(1,2)(1,3)(2,1)(2,2)(2,3)(3,1)(3,2)(3,3)}

:-)