In each of these question a number series is given in which one number is wrong find out wrong number
5 7 11 19 35 68 131

Options

A. 35
B. 7
C. 68
D. 11

Answer

To find the wrong number in the series: 5, 7, 11, 19, 35, 68, 131, we will analyze the differences between consecutive numbers and identify any inconsistencies.

### Step-by-Step Solution:

1. **Identify the Series**:
The given series is: 5, 7, 11, 19, 35, 68, 131.

2. **Calculate the Differences**:
We will find the differences between consecutive terms:
- 7 - 5 = 2
- 11 - 7 = 4
- 19 - 11 = 8
- 35 - 19 = 16
- 68 - 35 = 33
- 131 - 68 = 63

So, the differences are: 2, 4, 8, 16, 33, 63.

3. **Analyze the Differences**:
The differences themselves seem to follow a pattern. Let's observe:
- 2 (2^1)
- 4 (2^2)
- 8 (2^3)
- 16 (2^4)
- 33 (not a power of 2)
- 63 (not a power of 2)

The first four differences are powers of 2.

4. **Identify the Expected Difference**:
The next difference after 16 should logically be 32 (which is 2^5).

5. **Calculate the Correct Next Term**:
If we add 32 to the last correct term before the inconsistency:
- 35 + 32 = 67

6. **Compare with the Given Series**:
The next term in the series is given as 68, but we calculated it should be 67.

7. **Conclusion**:
Therefore, the wrong number in the series is 68.

### Final Answer:
The wrong number is **68**.