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Select the alphanumeric-cluster that can replace the question mark (?) in the following series.5A, 7C, 6E, 8G, ?, 9K, 8M
Question

Select the alphanumeric-cluster that can replace the question mark (?) in the following series.
5A, 7C, 6E, 8G, ?, 9K, 8M

A.

7J

B.

8H

C.

9J

D.

7I

Correct option is D

Given: 5A, 7C, 6E, 8G, ?, 9K, 8M
Logic: The number is increasing and decreasing by + 2 and  - 1 alternative and the letter is increasing by 2 place.
5 + 2 = 7, 7 - 1 = 6, 6 + 2 = 8, 8 - 1 = 7
A + 2 = C, C + 2 = E, E + 2 = G, G + 2 = I
The code is 7I.
Thus, correct option is (d).

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