1.

`A = {a,{b},c,{d,e}}` Find the number of subset of A which contains {b} but not c.A. 4B. 6C. 8D. 12

Answer» Correct Answer - A
(i) Use the concept of subsets.
(ii) Calculate the number of elements say p is A other than {b} and c.
(ii) Number of subsets = Number of subsets formed by p other than {b} and c.


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