Review definitions and examples of permutations, combinations.When choosing 4 students from 16 for an online study group, how many different groups of 4 could be put together.When choosing 4 employees from 16 to receive checks of $100, $50, $25, and $10, how many different groups of 4 could be put together?

Answered: Review definitions and examples of…

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

Review definitions and examples of permutations, combinations.

When choosing 4 students from 16 for an online study group, how many different groups of 4 could be put together.
When choosing 4 employees from 16 to receive checks of $100, $50, $25, and $10, how many different groups of 4 could be put together?

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Permutations :

We use permutations to find The number of ways of obtaining an ordered subset of r elements from a set of n elements.

$P (n, r) = \frac{n!}{(n - r)!}$