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HMMT 十一月 2013 · 冲刺赛 · 第 2 题

HMMT November 2013 — Guts Round — Problem 2

专题
Contest Math / 竞赛数学
难度
L3
来源
HMMT

题目详情

英文原题

  1. [ 5 ] Two fair six-sided dice are rolled. What is the probability that their sum is at least 10?
解析

英文解析

  1. [ 5 ] Two fair six-sided dice are rolled. What is the probability that their sum is at least 10?
    1 3+2+1 1
    Answer: There are 3 , 2 , 1 outcomes with sum 10 , 11 , 12, so the probability is = .
    6 6 62