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A website requires you to choose a username that contains 4 letters followed by 3 digits. How many possible usernames are there that begin with the letter E and contains the digit 8 exactly once? O 26³ × 3 × 9³ O 26³ × 10³ O 26³ × 3 × 9² 264 × 10³

A website requires you to choose a username that contains 4 letters followed by 3 digits. How many possible usernames are there that begin with the letter E and contains the digit 8 exactly once? O 26³ × 3 × 9³ O 26³ × 10³ O 26³ × 3 × 9² 264 × 10³

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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A website requires you to choose a username that contains 4 letters followed by 3 digits. How many possible usernames are there that begin with the letter E and contains the digit 8 exactly once? O 26³ × 3 × 9³ O 26³ × 10³ O 26³ × 3 × 9² 264 × 10³
Transcribed Image Text:A website requires you to choose a username that contains 4 letters followed by 3 digits. How many possible usernames are there that begin with the letter E and contains the digit 8 exactly once? O 26³ × 3 × 9³ O 26³ × 10³ O 26³ × 3 × 9² 264 × 10³
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