Find the correct option from the given choices to fill in the blank in the…
2013
Find the correct option from the given choices to fill in the blank in the series given below:
C E I K O Q _
- A.
R
- B.
T
- C.
S
- D.
U
Attempted by 2 students.
Show answer & explanation
Correct answer: D
Answer: U
Write each letter's position in the alphabet:
C=3, E=5, I=9, K=11, O=15, Q=17.
The gaps between consecutive positions alternate: +2, +4, +2, +4, +2, ...
5−3=+2, 9−5=+4, 11−9=+2, 15−11=+4, 17−15=+2.
So the next gap is +4: 17 + 4 = 21, which is the letter U.
Hence the series is C, E, I, K, O, Q, U — and the missing letter is U.