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Australian AMC 2023 - Senior Question 18

AMC AUSTRALIA · Australian AMC 2023 - Senior

Question 18

I have two identical dice, each with faces $1,\frac12,\sqrt3,\frac1{\sqrt3},\frac1{\sqrt2}$ and $\frac{\sqrt3}{2}$. I roll both dice and multiply the two numbers rolled, then simplify my answer. What is the probability that this product is rational?

Question illustration
  1. $\frac19$
  2. $\frac16$
  3. $\frac12$
  4. $\frac5{18}$
  5. $\frac7{18}$