A drum contains 4 black balls, 5 red balls and 6 green balls. If 6 balls are selected at random what is the probability that the sample contains (a) No red ball? (b) Exactly 1 black ball? (c) Exactly 1 red ball and exactly 2 green balls? (d) all are of the same color?

A drum contains 4 black balls, 5 red balls and 6 green balls. If 6 balls are selected at random what is the probability that the sample contains (a) No red ball? (b) Exactly 1 black ball? (c) Exactly 1 red ball and exactly 2 green balls? (d) all are of the same color?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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A drum contains 4 black balls, 5 red balls and 6 green balls. If 6 balls are selected at random what is the probability that the sample contains

(a) No red ball?

(b) Exactly 1 black ball?

(d) all are of the same color?

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