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Concept explainers
Four-digit Numbers How many four-digit numbers can be formed using the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 if the First digit cannot be 0? Repeated digits are allowed.
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To find: How many 4 digit numbers can be formed using the given digits, if repeated digits are allowed and first digit cannot be 0.
Answer to Problem 25AYU
9000
Explanation of Solution
Given:
The digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.
Formula used:
If a task consists of a sequence of choices in which there are selections for the first choice, selections for the second choice, selections for the third choice, and so on, the task of making these selections can be done in ... different ways.
Calculation:
In this task, number of choices for the first digit is 9 (since 0 cannot be the first digit).
Number of choices for the digit is 10.
Number of choice for the digit is 10.
Number of choice for the digit is 10.
Hence, there are different ways, the selection can be done.
Chapter 13 Solutions
Precalculus Enhanced with Graphing Utilities
Additional Math Textbook Solutions
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (4th Edition)
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University Calculus: Early Transcendentals (4th Edition)
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