3 R # 2 A $ K 5 % T 7 & N Y+X B/L Q @ 1
If the second half of the above series is reversed then using the new series , find the terms that does not belong to the group.
251, $TQ, K71, A%@, _____

Options

A. A%@
B. K71
C. $TQ
D. 251

Answer

To solve the problem step by step, we need to follow these instructions:

1. **Identify the given series**: The series provided is:
```
3 R # 2 A $ K 5 % T 7 & N Y + X B / L Q @ 1
```

2. **Split the series into two halves**: The series has 20 elements, so the first half consists of the first 10 elements and the second half consists of the last 10 elements.
- First half: `3 R # 2 A $ K 5 % T`
- Second half: `7 & N Y + X B / L Q @ 1`

3. **Reverse the second half**: When we reverse the second half, we get:
```
1 @ Q L / B X + Y N & 7
```

4. **Combine the first half with the reversed second half**: The new series now looks like this:
```
3 R # 2 A $ K 5 % T 1 @ Q L / B X + Y N & 7
```

5. **Identify the terms to check**: We need to check the following terms to see which one does not belong to the group:
- 251
- $TQ
- K71
- A%@

6. **Analyze each term**:
- **251**: This is a number and does not match the pattern of letters and symbols in the series.
- **$TQ**: This contains a symbol and two letters, which fits the pattern.
- **K71**: This contains a letter and two numbers, which also fits the pattern.
- **A%@**: This contains a letter and two symbols, which fits the pattern.

7. **Conclusion**: The term that does not belong to the group is **251**, as it is the only term that is purely numerical and does not contain any letters or symbols.

### Final Answer:
The term that does not belong to the group is **251**.