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Australian AMC 2008 - Senior Question 2

AMC AUSTRALIA · Australian AMC 2008 - Senior

Question 2

The difference between $\frac1{20}$ and $\frac2{10}$ is
  1. 0
  2. $\frac1{10}$
  3. $\frac35$
  4. $\frac3{10}$
  5. $\frac3{20}$