Question

If n(A) = 7, n(B) = 13, n(A Ո B) = 4, then n(A B) =​

Answer 1

Answer:

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Step-by-step explanation:

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

= 7 + 13 - 4

= 20 - 4

= 16

Therefore,

n(AUB) = 16

Answer 2

Answer:

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Step-by-step explanation:

Do by this formula- n(A U B)= n(A) + n(B)- n(A n B)

n(A U B)= 7 + 13 - 4

= 24

n( A U B) = 24