Consider all 5 letter “words” made from the letters a through h. (Recall, words are just strings of letters, not necessarily actual English words.) (a) How many of these words are there total? (b) How many of these words contain no repeated letters? (c) How many of these words start with the sub-word “aha”?
Consider all 5 letter “words” made from the letters a through h. (Recall, words are just strings of letters, not necessarily actual English words.) (a) How many of these words are there total? (b) How many of these words contain no repeated letters? (c) How many of these words start with the sub-word “aha”?
Algebra and Trigonometry (MindTap Course List)
4th Edition
ISBN:9781305071742
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter14: Counting And Probability
Section14.CR: Chapter Review
Problem 2CC
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Question
Consider all 5 letter “words” made from the letters a through h. (Recall, words are just strings of letters, not necessarily
actual English words.)
(a) How many of these words are there total?
(b) How many of these words contain no repeated letters?
(c) How many of these words start with the sub-word “aha”?
(d) How many of these words either start with “aha” or end with “bah” or both?
(e) How many of the words containing no repeats also do not
contain the sub-word “bad”?
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