   Chapter 9.6, Problem 2TY ### Discrete Mathematics With Applicat...

5th Edition
EPP + 1 other
ISBN: 9781337694193

#### Solutions

Chapter
Section ### Discrete Mathematics With Applicat...

5th Edition
EPP + 1 other
ISBN: 9781337694193
Textbook Problem
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# If X = { x 1 ,   x 1 ,   ​ … ,   x n } , the numberof r-comhinations with repetition allowed (or multisets of size r) chosen from X is .

To determine

To fill in the blanks in the statement, “If X={x1,x2,...,xn}. The number of r combinations with repetition allowed (or multisets of size r ) chosen from X is ____.”

Explanation

Given information:

The statement is given as “If X={x1,x2,...,xn}. The number of r combinations with repetition allowed (or multisets of size r ) chosen from X is _____.”

A multiset of size r is defined as a set of r number of elements with some of these elements are equal.

If a multiset of size r is formed from the set of n elements such that X={x1,x2,...,xn}, the multiset can be written as a r combination with repetition, [xi1,xi2,...,xir]

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