Answered: A room has 4 doors. In how many ways…

A room has 4 doors. In how many ways can an individual make a trip into this room and out again if he must enter and leave only by means of the doors? a. 24 b 4 c 16 d 8

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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Question

A room has 4 doors. In how many ways can an individual make a trip into this room and out again if he must enter and leave only by means of the doors?

a. 24

b 4

c 16

d 8

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