A lock consists of a keyboard with the numbers 0 through 9. A code consist of pressing 3 numbers simultaneously. (a) How many possible codes exist? (b) How many different codes contain the number 0? (c) How many different codes contain only even numbers?
A lock consists of a keyboard with the numbers 0 through 9. A code consist of pressing 3 numbers simultaneously. (a) How many possible codes exist? (b) How many different codes contain the number 0? (c) How many different codes contain only even numbers?
Chapter8: Sequences, Series,and Probability
Section8.6: Counting Principles
Problem 3ECP: A combination lock will open when you select the right choice of three numbers (from 1 to 30,...
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A lock consists of a keyboard with the numbers 0 through 9. A code consist of pressing 3 numbers
simultaneously.
(a) How many possible codes exist?
(b) How many different codes contain the number 0?
(c) How many different codes contain only even numbers?
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