We usually write numbers in decimal form (or base 10), meaning numbers are composed using 10 different "digits" {0, 1,...,9}. Sometimes though it is useful to write numbers hexadecimal or base 16. Now there are 16 distinct digits that can be used to form numbers: {0, 1,...,9, A, B, C, D, E, F}. So for example, a 3 digit hexadecimal number might be 2B8. a. How many 4-digit hexadecimals are there in which the first digit is E or F? 8192 b. How many 5-digit hexadecimals start with a letter (A-F) and end with a numeral (0-9)? c. How many 3-digit hexadecimals start with a letter (A-F) or end with a numeral (0-9) (or both)?
We usually write numbers in decimal form (or base 10), meaning numbers are composed using 10 different "digits" {0, 1,...,9}. Sometimes though it is useful to write numbers hexadecimal or base 16. Now there are 16 distinct digits that can be used to form numbers: {0, 1,...,9, A, B, C, D, E, F}. So for example, a 3 digit hexadecimal number might be 2B8. a. How many 4-digit hexadecimals are there in which the first digit is E or F? 8192 b. How many 5-digit hexadecimals start with a letter (A-F) and end with a numeral (0-9)? c. How many 3-digit hexadecimals start with a letter (A-F) or end with a numeral (0-9) (or both)?
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Transcribed Image Text:We usually write numbers in decimal form (or base 10), meaning numbers are composed using 10 different
“digits" {0, 1,...,9}. Sometimes though it is useful to write numbers hexadecimal or base 16. Now there are
16 distinct digits that can be used to form numbers: {0, 1, ...,9, A, B, C, D, E, F}. So for example, a 3 digit
hexadecimal number might be 2B8.
a. How many 4-digit hexadecimals are there in which the first digit is E or F?
8192
b. How many 5-digit hexadecimals start with a letter (A-F) and end with a numeral (0-9)?
c. How many 3-digit hexadecimals start with a letter (A-F) or end with a numeral (0-9) (or both)?
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