1. 

What should come in the place of question mark (?) in the following alpha numeric series?

8 H 24 X 7 G 15 O 17 ?

A. T
B. R
C. Q
D. P

Answer: Option C

Explanation:

Here, the numbers are followed by letters at that particular place in English alphabet.

letter-and-symbol-series-logical-reasoning-practice-level---letter-and symbol-series-problems

Hence, the missing term is Q.