Mathematics, 25.07.2020 20:01 mia3128

I) If the 10th and 17th terms of an A. P. are 7 and -7 respectively, find the first term, common difference and the 20th term.

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I) If the 10th and 17th terms of an A. P. are 7 and -7 respectively, find the first term, common di...

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