Question

Q.Let A={1,2} and B={3,4},write
A×B.How many subsets will A×B have? List them.​

Answer 1

Answer:

A={1,2} and B={3,4}

A×B.={(1,3)(1,4)(2,3)(2,4)}

total subset are 2^n

2^4=16

Answer 2

Given,

A={1,2} and B={3,4}.

Now,

AxB = {(1,3),(1,4),(2,3),(2,4)}

Since, AxB contains 4 elements,

so number of subsets of AxB is 2^4=16