一條數學題

2007-07-21 2:26 am
試運用 1, -2, 3, -4 組合出兩條結果為24的算式!~

唔該教下我!!!!THX!!!!!

回答 (7)

2007-07-21 2:42 am
✔ 最佳答案
第一式: (-2 )x (-4) x 3 x 1 = 24

第二式:(-4) x (1 x -2 x 3) = 24
2007-07-21 3:16 am
(1)(-2)(3)(-4)=24
2007-07-21 3:12 am
-2*(-4)*3*1=24
1*(-2)*3*(-4)=24
2007-07-21 2:35 am
(1) (-2 x -4) x3 x1 = 24

(2) (3 x -2 ) x -4 x 1 = 24
2007-07-21 2:34 am
(-2) * (-4) * 1 * 3 = 24
2007-07-21 2:33 am
1. (-2) x (-4) x 3 x 1 = 24
2. (-2) x (-4) x 3 / 1 = 24
2007-07-21 2:33 am
其中一個方法係:

(-2) * (-4) * 1 * 3 = 24

另一方法係:

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

2007-10-26 00:25:34 補充:
一式同二式條算式都係一樣gei,咁gei話我將呢4個數字調亂次序就得la,咁都可以得到最佳答案ar?我係批改果個就會叫佢再作過條算式比我la!
參考: 自己諗


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