一支队伍正好排成最外层每边为12人的实心方阵,若把这支队伍改排成3层空心方阵,最外层每边有多少人?最
若把这支队伍改排成3层空心方阵,最外层每边有多少人?最里层共有多少人?
人气:273 ℃ 时间:2020-05-19 00:51:24
解答
队伍总人数为12×12=144(人)
改成三层空心方阵后,最里层共有
144÷3-8=40(人)
最外层共有
144÷3+8=56(人)
则最外层每边有
(56+4)÷4
=60÷4
=15(人)
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