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标题: GWD3-23 [打印本页]

作者: knight9514 时间: 2006-2-20 19:13 标题: GWD3-23

If x and y are positive integers, and x³y⁴ = 2,000, which of the following is the value of xy?

A. 2

B. 4

C. 8

D. 10

E. 20

作者: windfalls 时间: 2006-2-21 13:41

2000= 16*125= 2^4*5^3
xy=10

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