Library / /44 of 472

, 2002

Number theory Difficulty 1.0 Junior Find the answer Canada

The numbers 1 through 20 are written on twenty golf balls, with one number on each ball. The golf balls are placed in a box, and one ball is drawn at random. If each ball is equally likely to be drawn, what is the probability that the number on the golf ball drawn is a multiple of 3?

(A) $\dfrac{3}{20}$ (B) $\dfrac{6}{20}$ (C) $\dfrac{10}{20}$ (D) $\dfrac{5}{20}$ (E) $\dfrac{1}{20}$

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Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project. Solutions are the publisher's, linked not copied.