CSMC 2022 Part A - Question 6, CEMC UWaterloo

All Submissions
Best Submissions

Difficulty: 8

This problem is tagged with csmc, csmc22, highschool.

(Canadian Senior Mathematics Contest 2022, Part A, Question 6, CEMC - UWaterloo)

A bag contains exactly $15$ marbles of which $3$ are red, $5$ are blue, and $7$ are green. The marbles are chosen at random and removed one at a time from the bag until all of the marbles are removed. One colour of marble is the first to have $0$ remaining in the bag. What is the probability that this colour is red?

Answer Submission Note(s)
Type fractional answers as "x/y".

Please login or sign up to submit and check if your answer is correct.

flag Report Content
You should report content if:
  • It may be offensive.
  • There is something wrong with it (statement or difficulty value)
  • It isn't original.
Thanks for keeping the Math Contest Repository a clean and safe environment!