An access code consists of a letter followed by four digits. Any letter can be used, the first digit cannot be zero, and the digits cannot be repeated. Find the number of possible access codes.
An access code consists of a letter followed by four digits. Any letter can be used, the first digit cannot be zero, and the digits cannot be repeated. Find the number of possible access codes.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:An access code consists of a letter followed by four digits. Any letter can be used, the first digit cannot be zero, and the digits cannot be repeated. Find the number
of possible access codes.
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