A standard set of billiard balls includes 16 balls: 15 numbered balls – with each of the numbers 1 to 15, inclusive, - The Beat The GMAT Forum

A standard set of billiard balls includes 16 balls: 15 numbered balls – with each of the numbers 1 to 15, inclusive,

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Vincen: Legendary Member; Posts: 2898; Joined: Thu Sep 07, 2017 2:49 pmFollowed by: 5 members; Thanked: 6 times

by Vincen » Wed Dec 16, 2020 3:35 am

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A standard set of billiard balls includes 16 balls: 15 numbered balls – with each of the numbers 1 to 15, inclusive, appearing on one ball each – and 1 white ball which is not numbered. If an additional ball from another standard set of billiard balls is accidentally included with an existing standard set of 16 balls, then what is the probability that the extra ball is NOT numbered with a multiple of 2 or 3?

A. 1/8
B. 1/4
C. 2/5
D. 3/8
E. 9/16

Answer: D

Source: EMPOWERgmat

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Source: Beat The GMAT — Problem Solving | Wed Dec 16, 2020 3:35 am

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