Question:

Arrange the following groups to form a logical series starting with C 7 J.
A. I 13 P
B. A 5 H
C. Q 21 X
D. K 15 R
E. S 23 Z
Choose the correct answer from the options given below :

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Look at the first letters: C, K, S, A, I, Q move forward by 8 places each time (cyclically).
Updated On: Oct 17, 2026
  • B, A, D, C, E
  • E, C, D, A, B
  • D, E, B, A, C
  • E, B, A, D, C
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The Correct Option is C

Solution and Explanation

Step 1: Understanding the Question:

• Each group has the form (letter, number, letter). We must find the rule and arrange the groups as a series that starts with C 7 J.

Step 2: Detailed Explanation:


• In every group the last letter is 7 places after the first letter (C-J, I-P, A-H, Q-X, K-R, S-Z) and the number equals the position of the first letter plus 4 (C=3, 3+4=7). So the series is governed by the first letter.

• First letters in alphabetical positions: C=3, K=11, S=19, A=1, I=9, Q=17. Starting from C (3) each step adds 8 (counting cyclically through 26): 3, 11, 19, 27 (=1), 9, 17.

• The series is therefore C 7 J, K 15 R, S 23 Z, A 5 H, I 13 P, Q 21 X, i.e. the groups D, E, B, A, C.

Step 3: Final Answer:

The correct option is (C) D, E, B, A, C.
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