1.

If A and B are two disjoint sets `n(A)+n(B)=24` then find `n(A cup B)`A. 16B. 18C. 24D. Cannot say

Answer» Correct Answer - C
n(A)+n(B)=24
A and B are disjoint
`therefore n(A cap B) =0`
`n(A cup B)+n(A cap B)=n(A)+n(B)`
`rArr n(A cup B)=24`
Hence , the correct option is ( c)


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