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| 1. |
Find the sum of following series2+5+8+......+182 |
| Answer» an=a+(n-1)d. a=2. D=3an=182182=2+(n-1)3182-2=(n-1)3180%3=nn=60n%2(a+l)=Sn60%2(2+182)=Sn30(184)=SnSn=5520 | |