Lemma
MediumCounting
#852 · Combinatorics · Counting

Finding n from a ratio of combinations

If , find the integer value of .

~5 minAnswer checked instantlybinomial coefficientsequation solving

H. S. Hall & S. R. Knight, Higher Algebra (1891) · Ch. XI. Permutations and Combinations, Examples XI.a, No. 8

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