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楼主: happysmiledy
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求助输血狗~有三个数字70, 200, n,……

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11#
发表于 2010-10-23 06:46:28 | 只看该作者
”任意一个都可以divide另两个数字的乘积“ 表达是对的~

Note that
A divides B =A is divisible by B  =  B is a divisor (factor) of A = A is a multiple of B
e.g.
5 divides 20 =20 is divisible by 5 =  5 is a divisor(factor) of 20 == 20 is a multiple of 5

Here any number divides the product of the other two, which means any number is a factor of the product of the other two.
-- by 会员 chinamerica (2010/10/23 4:19:33)

我覺得如果 A divides B= B/A
A is divisible by B= B/A
B is a divisor of A=A/B
????不明白了。。。
12#
发表于 2010-10-23 11:48:44 | 只看该作者
70=2*5*7
200=2^3*5^2
仨数每一个都能整除另俩积
N=2^2/2^3/2^4*5/5^2/5^3*7
max=5^3*2^4
min=5*2^2
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