Current location - Training Enrollment Network - Mathematics courses - At noon, the school canteen serves four kinds of meat dishes, three kinds of vegetarian dishes and two kinds of soup. Xiaojun will have a lunch with meat, vegetarian dishes and soup. How many differen
At noon, the school canteen serves four kinds of meat dishes, three kinds of vegetarian dishes and two kinds of soup. Xiaojun will have a lunch with meat, vegetarian dishes and soup. How many differen
At noon, the school canteen serves four kinds of meat dishes, three kinds of vegetarian dishes and two kinds of soup. Xiaojun will have a lunch with meat, vegetarian dishes and soup. How many different kinds does he have? (⊙ O ⊙ O ⊙o⊙)… ...... High school permutation and combination math problem! ! I can tell you responsibly that Xiaojun has 24 different collocation schemes! !

Ahem … I'm going to speak ~! ! Na ~ suppose there are four kinds of meat dishes, three kinds of vegetarian dishes and one or two kinds of soup: then ① and A can be matched with A, B, C and D; ①. B can also be matched with A, B, C and D; (1) and there are four in the same way as C; So there are 12 kinds ~! (2) and (a) can be matched with A, B, C and D; (2) There are four reasons for being the same as B; ② It is the same as C, so there are 12 kinds, so * * * is 24 kinds! ! ! ohyeah~! Have I made myself clear? O(∩_∩)O~~

Hope to solve your problem, hope to adopt ~!