Problem. Santa's Penguins.
Santa is accompanied by 54 partners. If 8 are reindeer and 17 are elves, how many penguins are with Santa?
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Exemple !
Santa is accompanied by 20 partners. If 6 are reindeer and 10 are elves, how many penguins are with Santa?
20 - 6 - 10 = 14 - 10 = 4