Question

3) If n (A) = 15; n(B)=22 and n (AnB)=8
then n (AUB) = ?
n (AUB) = n(A) +n(B)-
n (AUB) =. +22-
n (AUB) =
​

Answer 1

$\huge\sf\purple{♬•Answer:}$

Q. If n (A) = 15 n(B)=22 and n (A∩B)=8

B)=8then n (AUB) = ?

Answer:29

Explanation :

According to cardinal no. of sets.

n (AUB)=n(A)+n(B) - n(A∩B)

Putting the values,

=>n(AUB)=n(A)+n(B) - n(A∩B)

=>n(AUB)=15+22-8

=>n(AUB)=37-8=29