Computer Science: An Overview (12th Edition)
Computer Science: An Overview (12th Edition)
12th Edition
ISBN: 9780133760064
Author: Glenn Brookshear, Dennis Brylow
Publisher: PEARSON
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Chapter 9.5, Problem 7QE

Explanation of Solution

Find minimum number of people in a group so that at least two people in group have same birthday and relate this problem to file structures:

The numbers of people will be associated with some probability. We will find the number of people for a probability of just more than 0.5.

The probability can be easily calculated by first calculating the probability for not having the same birthday.

Calculating for 23 people

Probability of not having same birthday is,

P(A')=365365×364365×363365××3433650.493

Here,

  • P(A') is the probability of not having same birthday

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Chapter 9 Solutions

Computer Science: An Overview (12th Edition)

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