Select the letter cluster that can replace the question mark (?) in the following series.
URE, XUH, AXK, ?, GDQ
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → DAN
Each position of the cluster is checked on its own. Here every letter moves 3 places ahead; after Z the count continues from A.
First letters U (21), X (24), then 3 ahead of X are Y, Z, A; so the next is 3 ahead of A (1), \(1+3=4\), D, and 3 ahead of D gives G, which matches the last term
Second letters R (18), U (21), X (24): 3 ahead of X are Y, Z, A, and 3 ahead of A gives D, which matches the last term
Third letters E (5), H (8), K (11): the next is \(11+3=14\), N, and \(14+3=17\) gives Q, which matches the last term
So the missing cluster is DAN.