How many injective functions f: {1,2,3,4} {1,2,3,4,5} are there with f(n) < 2n? O 12 O 36 O 24 06
How many injective functions f: {1,2,3,4} {1,2,3,4,5} are there with f(n) < 2n? O 12 O 36 O 24 06
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:How many injective functions f: {1,2,3,4} {1, 2, 3, 4, 5} are there with f(n) <2n?
12
36
O24
0 6
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