A pin number is formed by choosing an ordered sequence of 4 digits from the set {0–9} where repetitions are not allowed but numbers beginning with 0 are.  i. How many different numbers can be formed? ii. How many numbers will be I) odd II). greater than or equal to 8000

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter9: Sequences, Probability And Counting Theory
Section9.5: Counting Principles
Problem 36SE: The number of 5-element subsets from a set containing n elements is equal to the number of 6-element...
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A pin number is formed by choosing an ordered sequence of 4 digits from the

set {0–9} where repetitions are not allowed but numbers beginning with 0 are. 

i.

How many different numbers can be formed?

ii.

How many numbers will be

I) odd

II). greater than or equal to 8000 

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