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Formulas of arithmetic propagation |
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Answer» Sn = n/2{2a+(n-1)d}an =a+(n-1)dD= d2-d1Ap formula= a, a+d,a+2d,a+3d........ an= a + (n-1)dd = a2-a1 Sum = Sn = 2*a + (n-1)d OrSn = a +an an = a+(n-1)d |
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