趣味數學題
加任何數學符號,使等式成立:
0 0 0 =
6
1 1 1 = 6
2
2 2 = 6
3
3 3 = 6
4
4 4 = 6
5
5 5 = 6
6
6 6 = 6
7
7 7 = 6
8
8 8 = 6
9
9 9 = 6
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答案:
(0!+
0!+0!)! = (1 + 1 + 1)! = 3! = 3x2x1 = 6
(1 +
1 + 1)! = 3! = 3x2x1 = 6
2 + 2 + 2 = 6
(3 * 3)-3 = 6
(4 / √4)+ 4 =(4/2)+ 4 = 6
(5/5)+ 5 = 6
(6 + 6)-6 = 6
7-(7/7)= 6
(√(8+8/8))! = (√(8+1))! = (√9)! = 3! = 6
或
8-√√(8+8) = 8-√4 = 8-2 = 6
或
3√8 + 3√8 + 3√8 = 2 + 2 + 2 = 6 (鍾純義說開三次方用到數字3,不是符號,故此解不好)
9-(9 / √9)= 9-(9/3)= 9-3 = 6。
(3 * 3)-3 = 6
(4 / √4)+ 4 =(4/2)+ 4 = 6
(5/5)+ 5 = 6
(6 + 6)-6 = 6
7-(7/7)= 6
(√(8+8/8))! = (√(8+1))! = (√9)! = 3! = 6
或
8-√√(8+8) = 8-√4 = 8-2 = 6
或
3√8 + 3√8 + 3√8 = 2 + 2 + 2 = 6 (鍾純義說開三次方用到數字3,不是符號,故此解不好)
9-(9 / √9)= 9-(9/3)= 9-3 = 6。
註:0!=1是定義出來的
(k+1)! = k! * (k+1),
let k=0代入...
1! = 0! * 1 , 所以 0!=1
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