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5. How many strings of 3 characters are there, such that every character is a lower case letter, the 3 characters must be different?

5. How many strings of 3 characters are there, such that every character is a lower case letter, the 3 characters must be different?

Algebra: Structure And Method, Book 1
Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter7: Applying Fractions
Section7.6: Percents Problems
Problem 1CE
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4. Suppose that Mr. H paid $500 for his insurance in 2018. It is expected that every year the insurance fee will be increased by $50 compared to previous year. Compute expected total insurance fee that will be paid by Mr. H from 2019 to 2055. (Including year 2019 and 2055.) 5. How many strings of 3 characters are there, such that every character is a lower case letter, the 3 characters must be different?
Transcribed Image Text:4. Suppose that Mr. H paid $500 for his insurance in 2018. It is expected that every year the insurance fee will be increased by $50 compared to previous year. Compute expected total insurance fee that will be paid by Mr. H from 2019 to 2055. (Including year 2019 and 2055.) 5. How many strings of 3 characters are there, such that every character is a lower case letter, the 3 characters must be different?
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