A. What is the order of ([15]20, [20]24) in Z20 × Z24? B. What is the largest order of an element in Z20 × Z24? And use your answer to show that Z20 × Z24 is not cyclic. C. Let G= Z10 × Zîo Let H = ((3, 7)) and K = ((7, 7)) Find HK in G Here, (3, 7) means ([3]10- [7]10) Just use this simplified notations in your answer.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
Section: Chapter Questions
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A. What is the order of ([15]20 , [20]24) in Z20 × Z24?
B. What is the largest order of an element in Z20 × Z24? And use your answer to show that Z20 × Z24
is not cyclic.
C. Let G =
Zo x Zo
10
'10
Let H = ((3, 7)) and K= ((7, 7))
Find HK in G
Here, (3, 7) means ([3]10: [7]10)
Just use this simplified notations in your answer.
Transcribed Image Text:A. What is the order of ([15]20 , [20]24) in Z20 × Z24? B. What is the largest order of an element in Z20 × Z24? And use your answer to show that Z20 × Z24 is not cyclic. C. Let G = Zo x Zo 10 '10 Let H = ((3, 7)) and K= ((7, 7)) Find HK in G Here, (3, 7) means ([3]10: [7]10) Just use this simplified notations in your answer.
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