MathDB
Hundreds digit is thrice the ones digit

Source: 2014-2015 SDML High School 1b Problem 1/2014-2015 SDML Middle School 1b Problem 4

August 28, 2016
2014-15 SDML Round 1SDML High SchoolSDML Middle School

Problem Statement

If you pick a random 33-digit number, what is the probability that its hundreds digit is triple the ones digit?