If nA-10-nB-6 and C-5 for three disjoint sets A-B-C then nA- B- C equals

The correct option is A 21 Since, A,B,C are disjoint sets ∴ n(A∪ B∪ C)=n(A)+n(B)+n(C) =10+6+5=21 ...

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Properties of Set Operation

If nA=10,nB...

Question

If $n (A) = 10, n (B) = 6$ and $(C) = 5$ for three disjoint sets $A, B, C$ then $n (A \cup B \cup C)$ equals

21

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Similar questions

A, B & C,

n (A \cup B \cup C) = n (A) + n (B) + n (C)

- n (A \cap B) - n (B \cap C) - n (C \cap A)

+ n (A \cap B \cap C)

n (A \cup B)

If A and B are two disjoint sets, then $n (A \cup B)$ is equal to

n (A \cup B)

A, B, C

n (A) = 10, n (B) = 15, n (C) = 20, n (A \cap B) = 8

n (B \cap C) = 9

n (A \cup B \cup C)

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