7! 35 ways 3 4!3!
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
Suppose that a college of engineering has seven departments, which we denote by a, b, c, d, e,f, and g.
Three of the seven representatives are to be selected to attend a statewide convention. How many ways are there to select the three officers?
To solve this I have uploaded a picture of how the notes are shown. My question is how they get the 7!/3!4!? where does 3! and 4! come from?
Thanks.

Transcribed Image Text:7!
35 ways
3
4!3!
Expert Solution
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Step 1
Combination: The number of different selections of ‘r’ elements from a set of ‘n’ elements is denoted and given by,
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(n-r x r!"
Step by step
Solved in 2 steps with 2 images
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