Question

If n(A) = 15, n(AUB)
29, n (An B) = 7, then find n (Β)
O
O
15
20
Ο Ο Ο
21
18​

Answer 1

Answer:

n(A U B) = n(A) + n(B) - n(A n B)

29 = 15 + n(B) - 7

29 - 15 +7 = n(B)

n(B) = 21

Step-by-step explanation:

The Answer is 21.

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