Given the sets of letters 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}, A = {a,e,i,o,u,y}, B = {a,d,g,j,m,p,s,v,y}, and C = {a.e.i, m,q,u,y}.
How many elements are in the set:A ∩ : C? Enter your answer, and in your own words, indicate how you arrived at the answer giving proper steps or justification.
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