Identifying the wrong term in the given series can be done by analyzing the pattern or rule that governs the sequence. Let's examine the given series: 5, 10, 17, 24, 27.

Identifying the Pattern:
To find the pattern, we can calculate the differences between consecutive terms:
- The difference between the first and second terms is 10 - 5 = 5.
- The difference between the second and third terms is 17 - 10 = 7.
- The difference between the third and fourth terms is 24 - 17 = 7.
- The difference between the fourth and fifth terms is 27 - 24 = 3.

Observations:
From the differences, we can observe that the pattern is not consistent. However, we can notice some relationship between the differences:
- The differences between the second and third terms, as well as the third and fourth terms, are the same (7).
- The difference between the fourth and fifth terms is different from the previous differences (3).

Applying the Pattern:
From the observations, we can conclude that the series follows a pattern where the differences between consecutive terms alternate between two values:
- The differences between the second and third terms and the third and fourth terms are the same.
- The difference between the fourth and fifth terms is different.

Identifying the Wrong Term:
Based on the pattern, the wrong term in the series is the fourth term, which is 24. This is because the difference between the third and fourth terms should be the same as the difference between the second and third terms (7), but in this case, it is 24 - 17 = 7. Therefore, the term 24 breaks the pattern.

Conclusion:
The wrong term in the series is option 'B' - 24.