The Principle of Inclusion-Exclusion can be used to solve the following problems. 1. How many functions f: {1,2,..., 7} → {1,2,3,4} are surjective?

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section1.1: Real Numbers
Problem 38E
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The Principle of Inclusion-Exclusion can be used to solve the following problems.
1. How many functions f : {1,2,..., 7} - → {1,2,3,4} are surjective?
2. Count the number of integers in the range 1 to 10¹0 are not perfect squares, cubes, or fifth powers. That is, the integer cannot be written in the form m" where m is an integer and ris
one of 2,3,5.
3. Count the number of arrangements of the 10 letters ABCDEFGHIJ in which none of the patterns ABE, BED, or HID occur.
Transcribed Image Text:The Principle of Inclusion-Exclusion can be used to solve the following problems. 1. How many functions f : {1,2,..., 7} - → {1,2,3,4} are surjective? 2. Count the number of integers in the range 1 to 10¹0 are not perfect squares, cubes, or fifth powers. That is, the integer cannot be written in the form m" where m is an integer and ris one of 2,3,5. 3. Count the number of arrangements of the 10 letters ABCDEFGHIJ in which none of the patterns ABE, BED, or HID occur.
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