1.

A and B are non-emptry sets, `n(A)` and `n(B)` are two consective odd numbers whose average is 8 and`n(A nnB)` is a prime number. The least possible value of `n(A uu B)` is `"______"`.A. 13B. 9C. 11D. 15

Answer» Correct Answer - B
(i) For the least value of `n(A uu B) , n(A uu B)` should be the greatest.
(ii) `n(A) = 7` and `n(B) = 9`.
(iii) For the least value of `n(A uu B), n(A nn B)` should be maximum.
(iv) Use the above information and find the least value of `n(A uu B)`.


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