9. A bag contains nine colored balls. Two balls are red, three balls are blue and four balls are green. Two balls are to be removed together, at random, from the bag. Find, giving your answers as fractions in their simplest form, the probability that the balls will be (a) Both red. (b) of the same colour. (c) Of different colour.
9. A bag contains nine colored balls. Two balls are red, three balls are blue and four balls are green. Two balls are to be removed together, at random, from the bag. Find, giving your answers as fractions in their simplest form, the probability that the balls will be (a) Both red. (b) of the same colour. (c) Of different colour.
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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Transcribed Image Text:9. A bag contains nine colored balls. Two balls are red, three balls are blue and four balls are green.
Two balls are to be removed together, at random, from the bag. Find, giving your answers as
fractions in their simplest form, the probability that the balls will be
(a) Both red.
(b) Of the same colour.
(c) Of different colour.
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