Health, 07.10.2020 21:01 lilyjordan5972

if the sums of the first 8 and 19 terms of an ap are 64 and 361 respectively, find the commom differences and the sum of n terms of the series

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if the sums of the first 8 and 19 terms of an ap are 64 and 361 respectively, find the commom differ...