A bucket contains 7 blue, 3 red and 9 black pens. If three pens are drawn one by one without replacement, find the probability of getting all black pens? 9C; (a) 19C, 3C; (b) 19C, 7C; (c) 19C, 10C, (d) 19C;
A bucket contains 7 blue, 3 red and 9 black pens. If three pens are drawn one by one without replacement, find the probability of getting all black pens? 9C; (a) 19C, 3C; (b) 19C, 7C; (c) 19C, 10C, (d) 19C;
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:A bucket contains 7 blue, 3 red and 9 black pens. If three pens are drawn one by one without
replacement, find the probability of getting all black pens?
9C
(a)
19C,
3C;
(b)
19C
7C3
(c)
19C
10C3
(d)
19C,
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