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请教两道数学题 [复制链接]

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发表于 2006-5-14 21:34:52 |显示全部楼层
In order to generate fractions,one standard six-sided die is rolled twice in a row.The result of the first roll is recorded as the numerator,and the result of the second roll is recorded as the denominator,the fraction are reduced,if possible.how many distinct fractions between 0 and 1 can be generated by this method?1 ~7 {5 y. K# f6 ^9 C
A15             B11                  C9       D 8         E 74 _; _! W( I9 A* L; `6 J8 v/ J- O# o- x
完全看不懂题,请牛人指点
8 u; v. m5 O3 M请问the units digit是什么意思啊???

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RE: 请教两道数学题 [修改]

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请教两道数学题
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