Lemma
MediumSequences & series
#1079 · Algebra · Sequences & series

Lowest layer of a triangular shot pile

A triangular pile of shot weighing lb has a value of £51. If iron is priced at s d per cwt, find the number of shot in the lowest layer of the pile.

~7 minAnswer checked instantlyunit pricetriangular numbers

H. S. Hall & S. R. Knight, Higher Algebra (1891) · Ch. VI. Harmonical Progression, Examples VI.b, No. 15

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