Question

Of A={3,5,7,9,11},B={7,9,11,13},C={11,13,15}, find (AnB) n (BuC)
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Answer 1

Answer:

(the intersection of two set A and B is set of all element which are both in A and B )

(AnB) = {3, 5,7,9,11 } n {7,9,11,13}

(AnB) = {7, 9,11}

(union of set B and C is the set of all element which are in B or in C)

n(BuC) = {7,9,11,13} u {11,13,15}

n(BuC) = {7,9,11,13,15} (don't repeat no.)