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| 1. |
Find the sum of first 22term of an ap in which d=7 and 22nd term is 49 |
| Answer» a22 is given to u...and d is also...with the help of this u can find a....and then n.....after that..u have n...a...d....then u can easily find its sum...using formula....sn =n/2(2a +(n-1))d.... | |