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Mathematics, 25.08.2021 14:00 CyanideFaux

(b) The fifth and twelve terms of an A. P. are respectively 17 and 45. Find the sum of the first 15 terms of the progression? it's a optional mathematics Questions please solve him​

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(b) The fifth and twelve terms of an A. P. are respectively 17 and 45. Find the sum of the first 15...
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