Mathematics
Senior High

2!2!って4じゃないんですか!!?!!?

(イ)8個の文字の順列の総数は 8・7・6・5・4・3 8! 2!2! 2.1 r = 10080 (個)

Answers

もちろん合ってますがこの式では既に分母分子を2!で1度割っていますね

しま

本当だ…恥ずかしい!!!

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