Question

Let A=(factor of 24) and B= factor of 30)Find AUB and A intersection B And A-B also verify that n(A-B) =n(A),n(A intersection B) =n(A union B)-n(B)?

Answer 1

✰✰|| Given ||✰✰

• A = factor of 24

• B = factor of 30

✰✰|| To Find ||✰✰

• A U B

• A ∩ B

• A - B

✪|| Solution ||✪

A U B

= 1,2,3,4,6,8,12, 24 U 1,2,3,5,6,10,15,30

= 1,2,3,4,5,6,8,10,12,15,24,30

A ∩ B

= 1,2,3,4,6,8,12, 24 ∩ 1,2,3,5,6,10,15,30

= 1,2,3,6,

A - B

= 1,2,3,4,6,8,12, 24 - 1,2,3,5,6,10,15,30

= 4,8,12,24