Saved Bookmarks
| 1. |
Find the sum of 11 terms of an ap whose middle term is 30 |
|
Answer» Thanks guys me confuse ho gayi thii Baad me common aa jaayega Bro waha pe solve mat karo means a+5d=6 hi rhene do In this we have a6 =30 so,a+ 5d =30, a=30-5d, S6=n\\2(2a +(n-1)d), 11/2(2×(30-5d)+(11-1)d),11/2(60-10d+10d),11/2×60,330 330 |
|