Explanation:

Let's break down the number series:

10, 35, 135, 360, 760, ?

- Let's look at the difference between terms:

- 35 - 10 = 25

- 135 - 35 = 100

- 360 - 135 = 225

- 760 - 360 = 400

- Now, check the pattern in the differences:

- 25 (5²), 100 (10²), 225 (15²), 400 (20²)

- The differences go up by 5², 10², 15², 20². So, next difference should be 25² = 625.

- Add 625 to the last term:

- 760 + 625 = 1385

- So, the answer is:

- Option 4: 1385

Summary of Options:

- 1225 Not fitting pattern

- 1275 Not fitting pattern

- 1365 Not fitting pattern

- 1385 Pattern matches, correct answer

- 1315 Not fitting pattern