Series : BKP, EMQ, IPS, NTV, ? The pattern followed in each letter of the terms is : 1st letter : B (+3 letters) = E (+4 letters) = I (+5 letters) = N (+6 letters) = T 2nd letter : K (+2 letters) = M (+3 letters) = P (+4 letters) = T (+5 letters) = Y 3rd letter : P (+1 letter) = Q (+2 letters) = S (+3 letters) = V (+4 letters) = Z Thus, missing term = TYZ