Question

Can someone please help me to do this worksheet
please
and don't write in a paper
and whoever does this correct I will mark him as a brilliant

Answer 1

Answer:

Ans1. a.. {6,10,18}

b. { phi}

c.{5,11,1}

d.{3,4,14,16,17,20}

Ans2. a..{g,h,z}

b.{c,e,a}

c.{n,x,q}