Question

If n(A - F)=18, n(AUB) = 70 and n(An B)=25, then find n(A) and n(B).
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Answer 1

Answer:

n(A) = 43

n(B) = 52

Step-by-step explanation:

n(A - B) = 18

n(A U B) = 70

n(A n B) = 25

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

=> 18 - 70 = -n(B)

=> n(B) = 52

n(A-B) = n(A) - n(A n B)

=> 18 = n(A) - 25

=> n(A) = 43

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Answer 2

Answer:

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