HMMT 2008 C3
- Combinatorics
- Answer
Farmer John has 5 cows, 4 pigs, and 7 horses. How many ways can he pair up the animals so that every pair consists of animals of different species? Assume that all animals are distinguishable from each other. (Please write your answer as an integer, without any incomplete computations.)
Dataset text NuminaMath olympiads. Quoted with source.
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100800
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