The first term of an A.P. is 5

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The first term of an A.P. is 5, the last term is 45 and the sum of all its terms is 400. Find the number of terms and the common difference.
04
Oct
The first term of an A.P. is 5, the last term is 45 and the sum of all its terms is 400. Find the number of terms and the common difference. The first term of an A.P. is 5 the last term is 45 and the sum of all its terms is 400. Find the [...]
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