17, 34, 51, 68, 95, 102

Options

A. 17
B. 34
C. 51
D. 95

Explanation

To solve the problem of identifying the incorrect number in the series: 17, 34, 51, 68, 95, 102, we can follow these steps:

### Step 1: Identify the Pattern
First, we need to observe the series and determine if there is a consistent pattern.

### Step 2: Check the Differences
Let's calculate the difference between consecutive terms:
- 34 - 17 = 17
- 51 - 34 = 17
- 68 - 51 = 17
- 95 - 68 = 27
- 102 - 95 = 7

### Step 3: Analyze the Differences
From the calculations, we can see that the first three differences are consistent (17), but the difference between 68 and 95 is 27, which is not consistent with the previous differences.

### Step 4: Determine the Correct Number
If we continue the pattern of adding 17, the next number after 68 should be:
- 68 + 17 = 85

### Step 5: Identify the Incorrect Number
Now, we can see that instead of 95, the correct number should be 85. Therefore, the incorrect number in the series is 95.

### Conclusion
The incorrect number in the series is 95.