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ring repeats?

ring repeats?

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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hello can you answer 23a,b,and c
23. Max needs to choose a new 4-digit PIN for his debit card. Any of the digits 0-9 can be used. a) How many 4-digit PINS are there, allowing repeats? b) How many 4-digit PINS are there without repeats? For example, 2527 would not be allowed. c) How many 4-digit PINS are there with at least one repeat?
Transcribed Image Text:23. Max needs to choose a new 4-digit PIN for his debit card. Any of the digits 0-9 can be used. a) How many 4-digit PINS are there, allowing repeats? b) How many 4-digit PINS are there without repeats? For example, 2527 would not be allowed. c) How many 4-digit PINS are there with at least one repeat?
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