1. How many three-digit codes are possible if the first digit must be a 3? (Digits may be repeated.) A. 90 B. 33 C. 100 D. 99

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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1. How many three-digit codes are
possible if the first digit must be a 3?
(Digits may be repeated.)
A. 90
B. 33
C. 100
D. 99
Transcribed Image Text:1. How many three-digit codes are possible if the first digit must be a 3? (Digits may be repeated.) A. 90 B. 33 C. 100 D. 99
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