Find the value of n (An B) if n (A) = 9, n (B) = 11, and n (AUB) = 15. n (An B) = (Type a whole number.)

Question

Mathematics

Guest

14 March, 23:54

Find the value of n (An B) if n (A) = 9, n (B) = 11, and n (AUB) = 15. n (An B) = (Type a whole number.)

+1

Answers (1)

Know the Answer?

Emilee · Answer 1

n (A∩B) = 5

Step-by-step explanation:

given,

n (A) = 9

n (B) = 11

n (A U B) = 15

we need to find n (A∩B) = ?

using formula,

n (A U B) = n (A) + n (B) - n (A∩B)

n (A∩B) = n (A) + n (B) - n (A U B)

n (A∩B) = 9 + 11 - 15

n (A∩B) = 5