You pick three tickets at random. What it the probability that all of them have the letter 'B'?
You pick three tickets at random. What it the probability that all of them have the letter 'B'?
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:Multiple Choice
9/45
C(45,3)
10
C(45,3)
C(5, 3)
C(45,3)
C(9, 3)
C(45,3)
None of the above is correct.
Transcribed Image Text:7.1, 7.2 6
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There are 45 tickets, each one has a digit between 1 and 9 on it and each has a letter A, B, C, D, or E on it. Here is a table of all the tickets:
1
3
4
6
8
A1
A2
АЗ
A4
A5
A6
A7
A8
A9
B1
B2
B3
B4
B5
B6
B7
B8
B9
C1
C2
C3
C4
C5
C6
C7
C8
C9
D
D1
D2
D3
D4
D5
D6
D7
D8
D9
E1
E2
ЕЗ
E4
E5
E6
E7
E8
E9
You pick three tickets at random. What it the probability that all of them have the letter 'B'?
Multiple Choice
9/45
C45,3)
10
CL45,3)
CS, 3)
CLAS,3)
Co. 3)
C145.3)
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