90 people, can there be at least 2 who have the same first digit of a cell number and the same last digit of a 7-digit cell phone number? If yes, why? Remember, the first digit cannot be a 0 or a 1. a. What classification would you use as the pigeonholes? b.What is considered the pigeons?

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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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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4. If there are 90 people, can there be at least 2 who have the same first digit of a cell number and the same last digit of a 7-digit cell phone number? If yes, why?
Remember, the first digit cannot be a 0 or a 1.

a. What classification would you use as the pigeonholes?

b.What is considered the pigeons?

c. If there are 90 people, can there be at least 2 who have the same first digit of a cell number and the same last digit of a 7-digit cell phone number?

d. If you said yes, why?

Write your response below:

c. If there are 90 people, can there be at least 2 who have the same first digit of a cell
number and the same last digit of a 7-digit cell phone number?
d. If you said yes, why?
Write your response below:
Transcribed Image Text:c. If there are 90 people, can there be at least 2 who have the same first digit of a cell number and the same last digit of a 7-digit cell phone number? d. If you said yes, why? Write your response below:
4. If there are 90 people, can there be at least 2 who have the same first digit of a cell
number and the same last digit of a 7-digit cell phone number? If yes, why?
Remember, the first digit cannot be a 0 or a 1.
a. What classification would you use as the pigeonholes?
b. What is considered the pigeons?
Transcribed Image Text:4. If there are 90 people, can there be at least 2 who have the same first digit of a cell number and the same last digit of a 7-digit cell phone number? If yes, why? Remember, the first digit cannot be a 0 or a 1. a. What classification would you use as the pigeonholes? b. What is considered the pigeons?
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