Question

If A and B are two sets having 3 elements in common. If n(A) = 5, n(B) = 4, find n (A x B) and n ( A x B) Π (B x A)

Answer 1

Solution:

n (A x B) :

n (A) × n(B)

: 5×4

: 20

n ( A x B) Π (B x A) :

3× 3

9

Answer 2

Answer:

9

Step-by-step explanation:

3 × 3 = 9 it is the answer