Prove that if n² is a multiple of 6, then n is also a multiple of 6. [Hint: Consider residues modulo 6. An integer being a multiple of 6 means 3 and 2 are both factors may be a helpful fact, as well.]
Prove that if n² is a multiple of 6, then n is also a multiple of 6. [Hint: Consider residues modulo 6. An integer being a multiple of 6 means 3 and 2 are both factors may be a helpful fact, as well.]
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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![7. Prove that if n² is a multiple of 6, then n is also a multiple of 6. [Hint: Consider residues
modulo 6. An integer being a multiple of 6 means 3 and 2 are both factors may be a helpful
fact, as well.]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc099cd14-8e7a-497e-ad22-59566121e7f5%2F6ef78d23-dd27-4ca9-94ea-dc842bc619a7%2Fvoklu6_processed.jpeg&w=3840&q=75)
Transcribed Image Text:7. Prove that if n² is a multiple of 6, then n is also a multiple of 6. [Hint: Consider residues
modulo 6. An integer being a multiple of 6 means 3 and 2 are both factors may be a helpful
fact, as well.]
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