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ǰλãҳ >> 7+7+7+7=24Ϊʲô? >>

7+7+7+7=24Ϊʲô?

ĸ7ӵ2824⣬7֧Ǧʣ7֧ǦʣĽ7֧ǦʣĸҲ7֧Ǧʣôֵܽüһ28֧Ǧˡ

⣺ 7+7+7+7 =7x1+1+1+1 =7x4 =2824

ã47DzͨӼ˳ʽ24ģԴ޽⣬ɣ

[(ln7+ln7+ln7)ln7]! =(2+1+1)! =4! =4*3*2*1 =24

2 7 7 11ô24㣺 2x77+11 =2x1+11 =2x12 =24

(7777)(7+7)24

1/3+3/4+2/5+5/7+7/8+9/20+10/21+11/24+12/35 =1/3+3/4+2/5+5/7+7/8+(1/4+1/5)+(1/3+1/7)+(1/3+1/8)+(1/5+1/7) =(1/3+1/3+1/3)+(3/4+1/4)+(2/5+1/5+1/5)+(7/8+1/8)+(5/7+1/7+1/7) =4+4/5 =4.8

5x+35+7x-35=24 12x=24 x=2 ϣ

24%x+7=7.24 0.24x=7.24-7 0.24x=0.24 x=0.24/0.24 x=1

7/8+17/24-7/8 7/8-7/817/24 17/24 Ҫڻ

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