题目不成立.
1/4 of the marbles in the box are white and the rest are red,
Mean the W:R is 1:3 which is 0.3333
After removing 24 of red, it should be greater than 0.3333, not less than 0.3333.
But 4/13=0.3077. therefore 题目不成立.
题目不成立.
所有跟帖:
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hehe, you are confused...回复:题目不成立.
-datuzi-
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04/10/2008 postreply
11:11:26
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回复:1/4=0.25 not 0.333
-鸡毛蒜皮-
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04/10/2008 postreply
13:20:29