ANSWER KEY ACT 1

Set A is the set of multiples of 3 from 3 to 30.

Set B is the set of multiples of 4 from 4 to 40.

AUB = { 3,4,6,8,9,12,15,16,18,20,21,24,27,28,30 }

A∩B = { 12, 24 }