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(a) Make a list of all the congruences classes [a 21 which are contained in G21. (Show some work.) (b) Express each of the following inverses of congruence classes in the form [k]21 for some integer 0< k < 21. (Show some work) : (i) [5] (ii) [13] (iii) [20] 21

(a) Make a list of all the congruences classes [a 21 which are contained in G21. (Show some work.) (b) Express each of the following inverses of congruence classes in the form [k]21 for some integer 0< k < 21. (Show some work) : (i) [5] (ii) [13] (iii) [20] 21

Advanced Engineering Mathematics
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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(a) Make a list of all the congruences classes [a21 which are contained in G21. (Show some work.) (b) Express each of the following inverses of congruence classes in the form [k]21 for some integer 0 < k < 21. (Show some work) : (i) [5] (ii) [13] (iii) [20]2
Transcribed Image Text:(a) Make a list of all the congruences classes [a21 which are contained in G21. (Show some work.) (b) Express each of the following inverses of congruence classes in the form [k]21 for some integer 0 < k < 21. (Show some work) : (i) [5] (ii) [13] (iii) [20]2
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