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标题: 是我错了吗?...;p [打印本页]

作者: lisaislisa 时间: 2003-1-16 11:59 标题: 是我错了吗?...;p

A problem from XDFCAT
the sum of the prime number that are more than 60 but less than 70 is
the ASN is 128
but mine is 67
the prime numbers of 67 is 1 and 67 sum of which is 68 , but that of 128 is ..1 qnd 2..., isn't it ?
[em08] [em06] [em08] [em06] [em08] [em06]

作者: sumer02618 时间: 2003-1-16 12:07

lisaislisa,当然是你错了，题目问的是60至70之间所有质数的和。答案当然是128。
[思路]61+67=128

作者: lisaislisa 时间: 2003-1-16 17:44

[em04][em04][em04][em04]
again , misunderstanding ...
[em09][em13][em09][em13]
thx summer

^^

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