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| 1. |
Formulas of chapter 5 |
| Answer» Common diference formula is a2 - a1 = a3 - a2For any term or any thing formula is an = a + (n-1) dAnd for sum of the AP formula is Sn = n/2 (2a + (n-1) d )To find last term formula is Sn = n/2 (a + l ) | |