Explanation:

Let’s break the sequence:

98, 128, 162, 200, 242, 266

- Find the differences:

128-98 = 30

162-128 = 34

200-162 = 38

242-200 = 42

266-242 = 24

- The difference increases by 4 each time, except the last one.

- The expected last difference should be 46 (42+4).

- Last term should be 242+46 = 288, not 266.

Option review:

1. 8 - Does not relate to any number in the series.

2. 266 - Correct! This does not fit the pattern.

3. 162 - Follows the correct pattern.

4. 128 - Follows the correct pattern.

5. 200 - Follows the correct pattern.