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| 1. |
If the sum of first m term of an AP is 2msquare+3m then what is its second term? |
| Answer» Given:Sm=2m^2+3mTm=Sm-Sm-1Tm=2m^2+3m-2(m-1)^2+3(m-1)Tm=2m^2+3m-2m^2-2+4m+3m-3Tm=10m-5T2=10(2)-5T2=15 | |