Assuming that any arrangement of letters forms a 'word', how many 'words' of any length can be formed from the 7 letter word? (No repeating of letters)

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Assuming that any arrangement of letters forms a 'word', how many 'words' of any length can be formed from the 7 letter word? (No repeating of letters)

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