Suppose we want to choose  5  letters, without replacement, from  10  distinct letters.(If necessary, consult a list of formulas.) (a) How many ways can this be done, if the order of the choices is not relevant?     (b) How many ways can this be done, if the order of the choices is relevant?

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section: Chapter Questions
Problem 40CT: There are 10 applicants for three sales positions at a department store. All of the applicants are...
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Suppose we want to choose 
5
 letters, without replacement, from 
10
 distinct letters.

(If necessary, consult a list of formulas.)
(a) How many ways can this be done, if the order of the choices is not relevant?
 
 
(b) How many ways can this be done, if the order of the choices is relevant?
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