Skip to main content

Probability Riddle Using Python: Divisible by 3


A bag contains four pieces of paper, each labeled with one of the digits 1, 2, 3 or 4, with no repeats. Three of these pieces are drawn, one at a time without replacement, to construct a three-digit number. What is the probability that the three-digit number is a multiple of 3?

Python Solution: 

Riddle source: