Question

If A= {p, q, r} and B= {x, y, z} then the number of elements in A× B=-------

Answer 1

Answer:

There are 9 elements in A×B.

Step-by-step explanation:

n(A×B)=n(A)×n(B).

= 3×3=9.

A×B={ (p,x) (p,y) (p,z) (q,x) (q,y) (q,z) (r,x) (r,y) (r,z).}

If you would count them then the no. of elements in A×B=9.