Which of the following letter will replace the question mark (?) in the given series?
J, E, A, X, V, ?

Correct option is D

To solve the given series: J, E, A, X, V, ?
The differences between their positions:
J (10) → E (5): 10 - 5 = -5
E (5) → A (1): 5 - 1 = -4
A (1) → X (24): 1 - 24 = -3 (since we wrap around the alphabet)
X (24) → V (22): 24 - 22 = -2
The pattern is decreasing by 5, 4, 3, and 2.
Following this pattern, the next difference should be -1.
V (22) → U (21)
So, the letter that should replace the question mark is U.
Correct answer is (d) U.