Saved Bookmarks
| 1. |
Find the middle term of an A. P 20,16,12...,-180 |
| Answer» Tn = a+(n-1)d => -180 = 20 + (n-1) -4 => -200 = -4n + 4 => -204 = -4n => n = 51 . Since, there are 51 terms. So, the middle term = 26 th term. | |