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6) You ask your friend to randomly write down a 5 digit number. What is the probability that he writes a number with first, middle and last digits being all identical? (12131, 55555,64646,90909}

6) You ask your friend to randomly write down a 5 digit number. What is the probability that he writes a number with first, middle and last digits being all identical? (12131, 55555,64646,90909}

A First Course in Probability (10th Edition)
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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please use probability formulas and let statements
6) You ask your friend to randomly write down a 5 digit number. What is the probability that he writes a number with first, middle and last digits being all identical? {12131, 55555,64646,90909}
Transcribed Image Text:6) You ask your friend to randomly write down a 5 digit number. What is the probability that he writes a number with first, middle and last digits being all identical? {12131, 55555,64646,90909}
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