→ (c) How many surjective functions f: {1, 2, 3, 4, 5} {1, 2} are there if f(1) = 1? How does this number change if f(1) = 1 and f(2)= 2? Show all your working and justify your answers.

Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Surjective functions
(c) How many surjective functions f: {1, 2, 3, 4, 5} {1, 2} are there if f(1) = 1? How does this
→
number change if f(1) = 1 and f(2)=2? Show all your working and justify your answers.
Transcribed Image Text:(c) How many surjective functions f: {1, 2, 3, 4, 5} {1, 2} are there if f(1) = 1? How does this → number change if f(1) = 1 and f(2)=2? Show all your working and justify your answers.
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