Using the digits 2 through 9, find the number of different 6-digit numbers such that: a. Digits can be used more than once. b. Digits cannot be repeated, but can come in any order. c. Digits cannot be repeated and must be written in increasing order.
Using the digits 2 through 9, find the number of different 6-digit numbers such that: a. Digits can be used more than once. b. Digits cannot be repeated, but can come in any order. c. Digits cannot be repeated and must be written in increasing order.
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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Transcribed Image Text:Using the digits 2 through 9, find the number of
different 6-digit numbers such that:
a. Digits can be used more than once.
b. Digits cannot be repeated, but can come in
any order.
c. Digits cannot be repeated and must be
written in increasing order.
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