Skip to content / Đến nội dung
ThichHocToan.com

SMO 2013 Senior Round 1 Question 9

SMO · SMO 2013 Senior Round 1

Question 9

Two people go to the same swimming pool between 2:00 p.m. and 5:00 p.m. at random time and each swims for one hour. What is the chance that they meet?
  1. $\frac19$
  2. $\frac29$
  3. $\frac13$
  4. $\frac49$
  5. $\frac59$