Concept explainers
Five-digit Numbers How many five-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 or 1? Repeated digits are allowed.
To find: How many 5 digit numbers can be formed using the given digits, if repeated digits are allowed and first digit cannot be 0 or 1.
Answer to Problem 26AYU
80000
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, since 0 or 1 cannot be first digit.
Number of choices for the first digit is 8.
Number of choices for the digit is 10.
Number of choice 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
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