What should come in place of the question mark (?) in the given series based on the English alphabetical order?
BOJ, FQO, JST, NUY, ?

The correct answer is RWD.

To find the missing term in the given series, let us analyze the pattern of each letter position separately based on their alphabetical positions:

First Letter Pattern:
B (2) + 4 = F (6)
F (6) + 4 = J (10)
J (10) + 4 = N (14)
N (14) + 4 = R (18)

So, the first letter is R.

Second Letter Pattern:
O (15) + 2 = Q (17)
Q (17) + 2 = S (19)
S (19) + 2 = U (21)
U (21) + 2 = W (23)

So, the second letter is W.

Third Letter Pattern:
J (10) + 5 = O (15)
O (15) + 5 = T (20)
T (20) + 5 = Y (25)
Y (25) + 5 = D (4th letter of next cycle)

So, the third letter is D.

Combining all three letters, the term that comes in place of the question mark is RWD.