Question

If n(A) = 3, n(B) = 4, n(A N B) = 2, then total number of relations from A to B is

Answer 1

Step-by-step explanation:

n(A)=3, n(B)=4.

n(AnB)=2

then n(AUB)=5

using the formula

n(A)+n(B)=n(AUB)+n(AnB)

Answer 2

n(a to b) = n(a)+n(b)_n(a and b)

= 3+4_2=5