Question

if A={3,6,9,12} and B={6,12,18,24,30} then what is n(A)=__ n(B)=__ (AuB)=__ n(AuB)=__ (AnB)=__ n(AnB)=__​

Answer 1

Answer:

n(A)=4

n(B)=5

AuB=(3,9,18,24,6,12,30)

n(AuB)=7

AnB=(6,12)

n(AnB)=2