The first term of an arithmetic progression is 15 and the last term is 27. The sum
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The first term of an arithmetic progression is 15 and the last term is 27. The sum of the first five terms is 79. Find the number of terms in this progression.
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Let the common difference of the arithmetic progression be denoted ...View the full answer
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Related Book For
Cambridge International AS And A Level Mathematics Pure Mathematics 1 Coursebook
ISBN: 9781108407144
1st Edition
Authors: Sue Pemberton, Julian Gilbey
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