HMMT 二月 2001 · 冲刺赛 · 第 38 题
HMMT February 2001 — Guts Round — Problem 38
题目详情
- [9] The cafeteria in a certain laboratory is open from noon until 2 in the afternoon every Monday for lunch. Two professors eat 15 minute lunches sometime between noon and 2. What is the probability that they are in the cafeteria simultaneously on any given Monday? 2001 7
解析
- [9] The cafeteria in a certain laboratory is open from noon until 2 in the afternoon every Monday for lunch. Two professors eat 15 minute lunches sometime between noon and 2. What is the probability that they are in the cafeteria simultaneously on any given Monday? 15 Solution: . 64 2001 7