Suppose thát the captain of a ship that is in distress must send a

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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Suppose that the captain of a ship that is
in distress must send a
total of eleven different signals in
succession. The eleven signals com-
prise of 4 blue light signals (B1, B2, B3
and B4), 4 purple light signals
(P1, P2, P3 and P4) and 3 red light
signals (R1, R2 and R3). He
must send the signals one after another
at 1 minute intervals. In
how many different ways may the
captain send the signals if the purple
light signals are the first 4 signals and
the red light signals are the last 3
signals? [Answer]
Transcribed Image Text:Suppose that the captain of a ship that is in distress must send a total of eleven different signals in succession. The eleven signals com- prise of 4 blue light signals (B1, B2, B3 and B4), 4 purple light signals (P1, P2, P3 and P4) and 3 red light signals (R1, R2 and R3). He must send the signals one after another at 1 minute intervals. In how many different ways may the captain send the signals if the purple light signals are the first 4 signals and the red light signals are the last 3 signals? [Answer]
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