Question

जर n(A) = 15. n(AUB) = 29an (AnBn) = 7, n? n (B) = ?​

Answer 1

Answer:

n (B)=21

Step-by-step explanation:

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

(29) = (15) + (B) - (7)

(29) = (8) + (B)

n(B) = (29) - (8)

n(B) = (21)