Question

if A={3,,9,12,15,18,21}',B={4,8,12,16,20}',C={2,4,6,8,10,12,14,16} D={5,10,15,20,} then find a union b and c union b​

Answer 1

Answer:

A union B= {3,4,8,9,12,15,16,18,20,21}

B union C= {2,4,6,8,10,12,14,16,20}