1.Convert 31 to base 2

2.LetA={1,2,3}B={a,b}findAxB

3.LetG={3x|xN}H={yyisaprimenumber}findGH

4.Listtheelementsof {3nn=0,1,2,3} 5.Usesetbuildernotationtodefinetheset{0,2,4,6,8,...}