Problem 1. We wish to form a 5 digit number using the digits 1, 2,..., 9. The constraintis that none of the digits should appear more than twice. How many numbers can be formedrespecting this constraint?

Digits: 1, 2, 3, 4, 5, 6, 7, 8, 9 Total no. of 5 digits that can be formed: 95 = 59049

Answered: Problem 1. We wish to form a 5 digit…

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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Problem 1. We wish to form a 5 digit number using the digits 1, 2, ..., 9. The constraint is that none of the digits should appear more than twice. How many numbers can be formed respecting this constraint?