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HMMT 十一月 2009 · 冲刺赛 · 第 16 题

HMMT November 2009 — Guts Round — Problem 16

专题
Contest Math / 竞赛数学
难度
L3
来源
HMMT

题目详情

英文原题

  1. [ 9 ] Pick a random digit in the decimal expansion of . What is the probability that it is 0?
    99999
解析

英文解析

  1. [ 9 ] Pick a random digit in the decimal expansion of . What is the probability that it is 0?
    99999
    4 1
    Answer: The decimal expansion of is 0 . 00001.
    5 99999