#928 · Combinatorics · Counting
Committee with At Least One Officer
From 4 officers and 8 privates, in how many ways can a committee of 6 be chosen that includes at least one officer?
H. S. Hall & S. R. Knight, Higher Algebra (1891) · Ch. XI. Permutations and Combinations, Examples XI.a, No. 18 (part 2)
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