#1001 · Algebra · Sequences & series

Geometric series with decimal terms

Find the sum of the first 7 terms of $16.2, 5.4, 1.8, \dots$ .

~2 minAnswer checked instantlygeometric seriesdecimal

H. S. Hall & S. R. Knight, Higher Algebra (1891) · Ch. V. Geometrical Progression, Examples V.a, No. 5

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