Question

If n(A) = 7, n(B) = 13, n(A∩B) = 4, then n (A∪B) = ?

Soln : ​

Answer 1

Answer:

16

Step-by-step explanation:

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

= 7 + 13 - 4

= 20 - 4

n(AUB) = 16

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