Suppose that the captain of a ship that isin distress must send atotal of twelve different signals insuccession. The twelve signals com-prise of 4 blue light signals (B1, B2, B3and B4), 4 purple light signals(P1, P2, P3 and P4) and 4 red lightsignals (R1, R2, R3 and R4). Hemust send the signals one after anotherat 1 minute intervals. Inhow many different ways may thecaptain send the signals if signals of eachof the same colour are to be sentconsecutively? [Answer]

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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]
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Suppose that the captain of a ship that is in distress must send a total of twelve different signals in succession. The twelve signals com-