-
(5² + 6² + 7² + ... + 10²) is equal to
-
- 330
- 345
- 355
- 360
- 330
Correct Option: C
Using the given formula ,
| 1² + 2² + 3² + 4² + ... + n² = | |
| 6 |
∴ 5² + 6² + .... 10² = (1² + 2² + ... + 10²) – (1² + 2² + 3² + 4²)
Here , n = 10 and n = 4
| Required answer = | - | ||
| 6 | 6 |
Required answer = 385 – 30 = 355
