Missing Term in the Sequence: 25, 31, 43, ?, 115, 211

To find the missing term in the given sequence, we need to identify the pattern or rule followed by the numbers.

Identifying the Pattern:
- The difference between the second term (31) and the first term (25) is 6.
- The difference between the third term (43) and the second term (31) is 12.
- The difference between the fourth term (?) and the third term (43) is 18.
- The difference between the fifth term (115) and the fourth term (?) is 72.
- The difference between the sixth term (211) and the fifth term (115) is 96.

Applying the Pattern:
From the pattern observed, it can be seen that the differences between consecutive terms are increasing by 6 each time.

- The difference between the fourth term (?) and the third term (43) is 18, which is obtained by adding 6 to the previous difference of 12.
- Therefore, the missing term should be obtained by adding 18 to the third term (43).
- The missing term is 43 + 18 = 61.

Verification:
Let's verify whether the missing term fits the pattern by checking the difference between the fourth and fifth terms.

- The difference between the fourth term (61) and the third term (43) is 18, which is consistent with the pattern.
- The difference between the fifth term (115) and the fourth term (61) is 54, which is obtained by adding 6 to the previous difference of 48.
- The pattern is consistent.

Conclusion:
Therefore, the missing term in the sequence is 61.