Skip to content / Đến nội dung
ThichHocToan.com

2005 AMC 10A Question 9

AMC10 · 2005 AMC 10A

Question 9

Three tiles are marked X and two other tiles are marked O. The five tiles are randomly arranged in a row. What is the probability that the arrangement reads XOXOX?
  1. $\dfrac{1}{12}$
  2. $\dfrac{1}{10}$
  3. $\dfrac{1}{6}$
  4. $\dfrac{1}{4}$
  5. $\dfrac{1}{3}$