If A={c, a,k, e} and U={a, b,c, d,e, f,g, h,i, j,k, l,m, n,o, p,q, r,s, t,u, v,w, x,y, z}, find A′.

  {b,d,f,g,h,i,j,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z}

Step-by-step explanation:

A' = U - A = {b,d,f,g,h,i,j,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z}

This is the set U with the members of set A removed.

this is a good question! i'll do some research and come back when i have the answer!