Answered: gits long. 1. How many choices are…

College Algebra

10th Edition

ISBN:9781337282291

Author:Ron Larson

Publisher:Ron Larson

Chapter8: Sequences, Series,and Probability

Section8.6: Counting Principles

Problem 8ECP: In how many different ways can two letters be chosen from the letters A, B, C, D, E, F, and G? (The...

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Question

. Suppose you are working on a ten-digit keypad to open a door. You know the combination is exactly three digits long.
1. How many choices are there if you may use a number multiple times and the order matters?
2. How many choices are there if you may not use a number multiple times and the order matters?
3. How many choices are there if you may not use a number multiple times and the order does
not matter?
4. How many choices are there if you may use a number multiple times and the order does not
matter?

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