Question

11.
If n (A) = 11, n (B) = 7 and n (AU B) = 13 then An B = ?
1) 5
2) 6.
3) 7
4) 2​

Answer 1

Answer:

n(AnB) =5

Step-by-step explanation:

n (A) = 11

n (B) = 7

n (AUB) = 13

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

= 11 + 7 - 13

= 5 ...Ans

Answer 2

Answer:

5

Step-by-step explanation:

n(a)+n(b)=13

11+7-13=5

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