Saved Bookmarks
| 1. |
The sum of first 20 terms of an AP is one-third of the sum of next 20 terms. If the first term is 1, then find the sum of first 30 terms. |
| Answer» The sum of first 20 terms of an AP is one-third of the sum of next 20 terms. If the first term is 1, then find the sum of first 30 terms. | |