Medium
In the following letter series, one term is missing. Find the missing term: WFB, TGD, QHG, (?)
Explanation
Explanation
First letters decrease by 3 positions: W, T, Q, N. Second letters increase by 1: F, G, H, I. Third letters move forward by +2, +3, +4: B, D, G, K. Therefore the missing term is NIK.
PRO TIP
Re-check your working by substituting the answer back into the original question.