11, 23, 50, 109, 234, 491

Options

A. 50
B. 23
C. 491
D. 234

Explanation

To solve the series: 11, 23, 50, 109, 234, 491, we need to identify the pattern in the numbers. Let's analyze the series step by step.

1. **Identify the first number**: The first number in the series is 11.

2. **Double the first number and add a pattern**:
- Double 11: \( 11 \times 2 = 22 \)
- Add 1: \( 22 + 1 = 23 \)
- So, the second number is 23.

3. **Double the second number and add a pattern**:
- Double 23: \( 23 \times 2 = 46 \)
- Add 4: \( 46 + 4 = 50 \)
- So, the third number is 50.

4. **Double the third number and add a pattern**:
- Double 50: \( 50 \times 2 = 100 \)
- Add 9: \( 100 + 9 = 109 \)
- So, the fourth number is 109.

5. **Double the fourth number and add a pattern**:
- Double 109: \( 109 \times 2 = 218 \)
- Add 16: \( 218 + 16 = 234 \)
- So, the fifth number is 234.

6. **Double the fifth number and add a pattern**:
- Double 234: \( 234 \times 2 = 468 \)
- Add 25: \( 468 + 25 = 493 \)
- So, the expected sixth number should be 493.

7. **Compare with the given series**: The last number in the series is 491, but we calculated it to be 493.

8. **Conclusion**: The wrong number in the series is 491, and it should be 493.

### Final Answer:
The wrong number in the series is **491**.