标题:
OG12 PS142
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作者:
Fadaways
时间:
2010-11-7 07:12
标题:
OG12 PS142
If y is the smallest positive integer such that 3,150 multiplied by y is the square of an integer, then y must be
A 2
B 5
C 6
D 7
E 14
题目没太看懂~!
作者:
daoyinger
时间:
2010-11-7 21:30
3,150=315*10=63*5*2*5=7*(3^2)*(5^2)*2
y是最小的正整数,使得3,150除以y后是某个整数的平方;
y=14, 3,150/14=15^2
作者:
卮言浅夏
时间:
2010-11-8 20:56
明明是乘以指的是3154乘以Y是个数的平方。
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