#1017 · Algebra · Sequences & series

Common ratio from first, last and sum

In a geometric progression the first term is $7$ , the last term is $448$ , and the sum of all terms is $889$ . Find the common ratio.

~5 minAnswer checked instantlyGeometric progressionSum of GP

H. S. Hall & S. R. Knight, Higher Algebra (1891) · Ch. V. Geometrical Progression, Examples V.a, No. 23

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Checked against the answer in H. S. Hall & S. R. Knight, Higher Algebra (1891).