If the sum of first n terms of an ap is2n^2 5n then find S20

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If the sum of first n terms of an ap is2n^2 5n then find S20

BATHULA VEERASWAMY

Nov. 12, 2018, 8:26 p.m.

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BATHULA VEERASWAMY

Nov. 12, 2018, 8:29 p.m.

If the sum of first n terms of an a.p. 2n^2 5n then find n term

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