Question

If A×B=B×A when
A)AB
C)A≠B
D)A=B

Answer 1

Step-by-step explanation:

d) A=B

reason

let us assume A={a,b} B= {a,b}

A×B = { a,a , a, b ,b, a ,b, b}

B×A = { a,a , a, b ,b, a ,b, b}

Hence proved