What is 10x2?

a-20

b-100

A = 20

Multiply 2 by both numbers. So 2•1 would be 2. 2•0 would be 0. So you'd get 20

If you would like to know how much is 10 * 2, you can do it like this:

10 * 2 = 10 + 10 = 20

The correct result is a; 20.

The result b would be correct, when:

b; 100 = 10^2 = 10 * 10