Question

Find A – (A – B) if A = {5, 9, 13, 17, 21} and B = {3, 6, 9, 12, 15, 18, 21, 24}

Answer 1

Answer:

Step-by-step explanation:

A = {5, 9, 13, 17, 21}

B = {3, 6, 9, 12, 15, 18, 21, 24}

A - (A - B) = {5, 9, 13, 17, 21 }( {5, 9, 13, 17, 21} - {3, 6, 9, 12, 15, 18, 21, 24} )

={5, 9, 13, 17, 21} - {3, 5, 6, 12, 13, 15, 17, 18, 24}

={3, 6, 12, 15, 18, 24}