Question

what will be the next term AA,BD,CI,DP

Answer 1

your ans

the next term will be EY

solution

AA(B,C)

two alphabet gaps

BD(E,F,G,H)

four alphabet gaps

CI(J,K,L,M,N,O)

six alphabet gaps

DP(Q,R,S,T,U,V,W,X)

now since they are increasing in a even series
so next term will be of 8 alphabet gaps

EY

Answer 2

see here ,
AA means A/A i.e in alphabets A comes 1st
so,
1/1 is 1
BD 2/4 is 1.5
ci is 3/9 is 1/3
DP is 4/16 is 1/4
now, the result should 1/5 and that shuold have E.
i.e EY result is 1/5
so, the answer is EY