Question

If n(A) = 7 , n (B) = 13 n(AnB) = 4 then
n Aug. 1​

Answer 1

n(A) = 7

n(B) = 13

n(AnB) = 4

n(AUB) = ?

We know that,

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

= 7 + 13 - 4

= 20 - 4

= 16

Thus, n(AUB) = 16.

Answer 2

Step-by-step explanation:

n(AuB)=n(A)+n(B) - n(Anb)

=7+13-4

=20-4

=16