How many different 5-letter words can be made: a. if the first letter must be C, Y, or T and no letter may be repeated? b. if repeats are allowed (but the first letter is C, Y, or T)? c. How many of the 5-letter words (starting with C, Y, or T) with no repeats end in S?

How many different 5-letter words can be made: a. if the first letter must be C, Y, or T and no letter may be repeated? b. if repeats are allowed (but the first letter is C, Y, or T)? c. How many of the 5-letter words (starting with C, Y, or T) with no repeats end in S?

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

How many different 5-letter words can be made:

a. if the first letter must be C, Y, or T and no letter may be repeated?

b. if repeats are allowed (but the first letter is C, Y, or T)?

c. How many of the 5-letter words (starting with C, Y, or T) with no repeats end in S?

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