Which of the following set of letters will complete the given letter series ? `{:("WEB","TGD","QHG",?):}`

Options

A. NIJ
B. NIK
C. NJK
D. PJK

Answer

To solve the letter series problem, we need to identify the pattern in the given series: "WEB", "TGD", "QHG". Let's break it down step by step.

### Step 1: Analyze the first letters of each group
The first letters are:
- W (from WEB)
- T (from TGD)
- Q (from QHG)

To find the pattern, we can convert these letters to their corresponding positions in the alphabet:
- W = 23
- T = 20
- Q = 17

Now, let's see the difference between these positions:
- From W to T: 23 - 20 = 3 (decrease by 3)
- From T to Q: 20 - 17 = 3 (decrease by 3)

So, we can see that we are decreasing by 3 each time. If we continue this pattern:
- Q (17) - 3 = N (14)

### Step 2: Analyze the second letters of each group
The second letters are:
- E (from WEB)
- G (from TGD)
- H (from QHG)

Convert these letters to their positions:
- E = 5
- G = 7
- H = 8

Now, let's see the differences:
- From E to G: 7 - 5 = 2 (increase by 2)
- From G to H: 8 - 7 = 1 (increase by 1)

The pattern here is not consistent, but we can assume that the next letter might increase by 2 (continuing the previous increase):
- H (8) + 2 = J (10)

### Step 3: Analyze the third letters of each group
The third letters are:
- B (from WEB)
- D (from TGD)
- G (from QHG)

Convert these letters to their positions:
- B = 2
- D = 4
- G = 7

Now, let's see the differences:
- From B to D: 4 - 2 = 2 (increase by 2)
- From D to G: 7 - 4 = 3 (increase by 3)

Continuing this pattern, we can assume the next increase will be by 4:
- G (7) + 4 = K (11)

### Conclusion
Putting it all together, the next set of letters in the series would be:
- First letter: N
- Second letter: J
- Third letter: K

Thus, the complete set of letters that will complete the series is **"NJK"**.

### Final Answer
The answer is **NJK**.