Question

n (A)=50
n (aUb)=
n (AnB) = 17
n(B) =39

Answer 1

Answer:

72

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Answer 2

Given :-

• n(A) = 50
• n(A n B) = 17
• n(B) = 39

To Find :-

• n(A u B) = ?

Formula used :-

• n(A u B) = n(A) + n(B) - n(A n B)

Solution :-

putting all given values in above told formula we get,

→ n(A u B) = n(A) + n(B) - n(A n B)

→ n(A u B) = 50 + 39 - 17

→ n(A u B) = 89 - 17

→ n(A u B) = 72 (Ans.)

Hence, n(A u B) is equal to 72 .

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