Question

A={3x/xbelongs to N, x less than or equal to 50} B={5x/x belongs to N, x less than or equal to 30} then n(AuB)​

Answer 1

Step-by-step explanation:

A = { 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48}

B = { 5, 10, 15, 20, 25, 30}

AUB = { 3, 5, 6, 9, 10, 12, 15, 18, 20, 21, 24, 25, 27, 30, 33, 36, 39, 42, 45, 48}

U or union is the common written once and to include all the elements in both the sets which are asked)

I hope it helps.