Find the next letter in the following series.
E, G, I, L, O, S, _______ ?

Options

A. T
B. Z
C. B
D. W

Answer

To find the next letter in the series E, G, I, L, O, S, we can analyze the pattern of the letters given.

### Step-by-Step Solution:

1. **Identify the Series**: The letters given are E, G, I, L, O, S.

2. **Convert Letters to Their Positions**:
- E = 5
- G = 7
- I = 9
- L = 12
- O = 15
- S = 19

3. **Determine the Differences Between Positions**:
- From E (5) to G (7): +2
- From G (7) to I (9): +2
- From I (9) to L (12): +3
- From L (12) to O (15): +3
- From O (15) to S (19): +4

4. **Identify the Pattern in Differences**:
- The differences are: +2, +2, +3, +3, +4.
- It appears that the pattern is repeating the first two differences and then increasing the last difference.

5. **Continue the Pattern**:
- After S (19), we should continue with the next difference, which is +4 again.
- So, we add 4 to S (19):
- 19 + 4 = 23.

6. **Convert Back to Letter**:
- The 23rd letter of the alphabet is W.

7. **Conclusion**: Therefore, the next letter in the series is W.

### Final Answer:
W