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If n(A) = 10,n(B) = 6 and n( C ) =5 ...

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

A

21

B

11

C

1

D

9

Text Solution

Verified by Experts

The correct Answer is:
A
since A,B,C are Disjoint sets.
`therefore n( A cup B cup C)=n(A)+n( B) +n( C) = 10+6+5=21`
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