SOLUTION: The first term and the last term of an arithmetic series is 5 and 61 respectively while the sum of all the terms is 975. Determine the number of terms in the series

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Question 1109442: The first term and the last term of an arithmetic series is 5 and 61 respectively while the sum of all the terms is 975. Determine the number of terms in the series
Answer by ikleyn(52788) About Me  (Show Source):
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The first term and the last term of an arithmetic series is 5 and 61 respectively while the sum of all the terms is 975.
Determine the number of terms in the series
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