In the question below there are four groups. Each group consists of either one number and two letters or two numbers and one letter. Three of these four groups follow one group which does not follow the same principle. Find correct answer.

Options

A. 1, E, 3
B. 3, J, 6
C. 6, Q, 10
D. 15, W, 21

Answer

To solve the problem, we need to analyze the four groups provided and determine which one does not follow the same principle as the others. The groups consist of either one number and two letters or two numbers and one letter. We will check the face values of the letters and see if they relate to the numbers in the specified manner.

### Step-by-Step Solution:

1. **Identify the Groups**: We have four groups. Let's assume they are:
- Group 1: 1E3
- Group 2: 3J6
- Group 3: 6Q10
- Group 4: 15W21

2. **Calculate Face Values**: We will calculate the face values of the letters in each group:
- For E: Face value = 5
- For J: Face value = 10
- For Q: Face value = 17
- For W: Face value = 23

3. **Check Group 1 (1E3)**:
- Terminal numbers: 1 and 3
- Sum of terminal numbers = 1 + 3 = 4
- Adding 1 to the sum: 4 + 1 = 5
- Face value of E = 5 (Matches)

4. **Check Group 2 (3J6)**:
- Terminal numbers: 3 and 6
- Sum of terminal numbers = 3 + 6 = 9
- Adding 1 to the sum: 9 + 1 = 10
- Face value of J = 10 (Matches)

5. **Check Group 3 (6Q10)**:
- Terminal numbers: 6 and 10
- Sum of terminal numbers = 6 + 10 = 16
- Adding 1 to the sum: 16 + 1 = 17
- Face value of Q = 17 (Matches)

6. **Check Group 4 (15W21)**:
- Terminal numbers: 15 and 21
- Sum of terminal numbers = 15 + 21 = 36
- Adding 1 to the sum: 36 + 1 = 37
- Face value of W = 23 (Does not match)

7. **Conclusion**: The fourth group (15W21) does not follow the same principle as the others. Therefore, the correct answer is Group 4.