You have 6 reindeer, Jebediah, Bloopin, Balthazar, Ezekiel, Prancer, and Lancer, and you want to have 4 fly your sleigh. You always have your reindeer fly in a single-file line.

Mathematics · High School · Thu Feb 04 2021

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4 = 4 × 3 × 2 × 1 = 24 that is how many you can get with 4 combinations

6 x 5 x 4 x 3 = 360 this is a 4 digit combination with 6 numbers