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Mathematics, 17.06.2021 14:40 yousifgorgees101
The ninth term of an A. P. is 42 and the sum from sixth term to the tenth term of the A. P. exceeds the sum of the five first term of the A. P. by 100.Find the sum of the first 15terms of the A. P.​
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The ninth term of an A. P. is 42 and the sum from sixth term to the tenth term of the A. P. exceeds...
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