What should come in place of the question mark (?) in the given series based on the English alphabetical order? FQN, CLL, ZGJ, WBH, ?

The correct option is TWF.

To find the missing term in the given series based on the English alphabetical order, let us analyze the pattern followed by each corresponding letter in the letter-clusters: FQN, CLL, ZGJ, WBH, ?

First, let us write the positional values of the letters in the English alphabet (A = 1, B = 2, ..., Z = 26):

• F = 6, C = 3, Z = 26, W = 23
• Q = 17, L = 12, G = 7, B = 2
• N = 14, L = 12, J = 10, H = 8

Now, let us examine the pattern for each position step-by-step:

1. First letter of each cluster:

• F (6) - 3 = C (3)
• C (3) - 3 = Z (26)
• Z (26) - 3 = W (23)
• Following the same pattern: W (23) - 3 = T (20)

So, the first letter is T.

2. Second letter of each cluster:

• Q (17) - 5 = L (12)
• L (12) - 5 = G (7)
• G (7) - 5 = B (2)
• Following the same pattern: B (2) - 5 = W (23) [since 2 - 5 = -3, wrapping around from Z (26): 26 - 3 = 23]

So, the second letter is W.

3. Third letter of each cluster:

• N (14) - 2 = L (12)
• L (12) - 2 = J (10)
• J (10) - 2 = H (8)
• Following the same pattern: H (8) - 2 = F (6)

So, the third letter is F.

Combining all three letters gives the letter-cluster TWF.

Therefore, the term that should come in place of the question mark (?) is TWF.