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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 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 terms of the progression?

it's a optional mathematics Questions please solve him​

User Almaz
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I do not know how to solve this problem sorry see ypu later mabye

User Marc Juchli
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