A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN: 9780134753119
Author: Sheldon Ross
Publisher: PEARSON
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solve it math q4a

Q-4: a) In the following questions, let's assume that a "word" refers to any sequence of seven letters from the alphabet, where duplicate letters are allowed. i. How many words begin with R and end with T? ii. How many words begin with A or end with B? iii. How many words begin with A or B and end with A or B? iv. How many words begin with A or B or end with A or B? V. How many words begin with a vowel and end with a vowel?
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Transcribed Image Text:Q-4: a) In the following questions, let's assume that a "word" refers to any sequence of seven letters from the alphabet, where duplicate letters are allowed. i. How many words begin with R and end with T? ii. How many words begin with A or end with B? iii. How many words begin with A or B and end with A or B? iv. How many words begin with A or B or end with A or B? V. How many words begin with a vowel and end with a vowel?
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