In the following series, some of the letters are missing. Identify the sequence of letters from the given options which will complete the series.
m n o n o _ q o p q r _ p _ r s _ u
(A) p
(B) q
(C) s
(D) t
Choose the correct sequence answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → (A), (C), (B), (D)
The series breaks into groups that grow by one letter each time, and each group starts one letter later than the one before: mno | no_q | opqr_ | p_rs_u.
First group: m n o (3 letters)
Second group: n o p q (4 letters), so the first blank is p (A)
Third group: o p q r s (5 letters), so the second blank is s (C)
Fourth group: p q r s t u (6 letters), so the third and fourth blanks are q (B) and t (D)