Mathematics, 26.08.2020 01:01 whocares1819

[I. S.C. 23. If the sum of the first 4 terms of an arithmetic progression is p, the sum of the first 8 terms is q and
the sum of the first 12 terms is r, express 3p + rin terms of q.

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[I. S.C. 23. If the sum of the first 4 terms of an arithmetic progression is p, the sum of the firs...