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Magoosh - 数学PS - 238
Set K consists of all fractions of the form$${ x}\over({x+2}) $$where x is a positive even integer less than 20. What is the product of all the fractions in Set K ?
  • A$$\frac{1}{20}$$
  • B$$\frac{1}{10}$$
  • C$$\frac{1}{9}$$
  • D$$\frac{1}{2}$$
  • E$$\frac{8}{9}$$
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正确答案: B

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