If n A -50- n B -20- n A - B -10- then n A - B -A- 60- 50- 40D- 70

The correct option is B 50n(A Δ B) = n(A ∪ B) – n(A ∩ B) = (50 + 20 – 10) – 10 = 50 ...

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Difference of Two Sets

If n A =50, n...

Question

If $n (A) = 50, n (B) = 20, n (A \cap B) = 10,$ then $n (A Δ B) =$

50

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60

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70

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40

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Solution

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n (A) = 50, n (A \cup B) = 80, n (A \cap B) = 30

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If A and B are two sets such that n(A) = 70, n(B) = 60, $n (A \cup B)$ = 110, then $n (A \cap B)$ is equal to

U

A

B

n (A) = 50, n (B) = 60, n (A \cap B) = 20

n (A^{'} \cap B^{'}) =

n (A) = 50, n (B) = 20, n (A \cap B) = 10,

n (A Δ B) =

n ((A \cup B)^{'})

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