The first term of an arithmetic progression is 16 and the sum of the first 20 terms
Question:
The first term of an arithmetic progression is 16 and the sum of the first 20 terms is 1080.
a. Find the common difference of this progression.
The first, third and nth terms of this arithmetic progression are the first, second and third terms, respectively, of a geometric progression.
b. Find the common ratio of the geometric progression and the value of n.
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Step by Step Answer:
a Let the common difference be d Then the second term is 16 d the third term is 16 2d and so on The ...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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