Awebsite has a password that consists of four digits, 0 through 9, followed by three letters from an alphabet having 26 letters. The digits cannot repeat, but the letters can repeat. Determine the number of different passwords that can be made. Student work to calculate this answer is shown below. Determine who is correct. Cindy: 10- 10 - 10 - 10 - 26 - 25 · 24 John: 10.9.8.7. 26 - 26 - 26 a) Both are correct. b) Neither is correct. c) Cindy is correct. d) John is correct.

Awebsite has a password that consists of four digits, 0 through 9, followed by three letters from an alphabet having 26 letters. The digits cannot repeat, but the letters can repeat. Determine the number of different passwords that can be made. Student work to calculate this answer is shown below. Determine who is correct. Cindy: 10- 10 - 10 - 10 - 26 - 25 · 24 John: 10.9.8.7. 26 - 26 - 26 a) Both are correct. b) Neither is correct. c) Cindy is correct. d) John is correct.

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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Question

Awebsite has a password that consists of four digits, 0 through 9, followed
by three letters from an alphabet having 26 letters. The digits cannot
repeat, but the letters can repeat. Determine the number of differ ent
passwords that can be made. Student work to calculate this answer is
shown below. Determine who is correct.
Cindy:
10 - 10 - 10 - 10 - 26 - 25 - 24
John: 10-9.8.7. 26 - 26 - 26
a) Both are correct.
b) Neither is correct.
c) Cindy is correct.
d) John is correct.

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