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Questions Tagged with "elementary number theory" (Page 4)

Explore solved questions tagged with "elementary number theory" or help others by answering their unsolved questions related to "elementary number theory".

Suppose that $N$ and $r$ are positive integers. Prove or disprove that if $N$ is an even integer and $r$ is odd, then $binom{N}{r}$ is even.

3 answer

Mathematics Asked 3 years ago by s1mple

Rational number and irrational number

2 answer

Mathematics Asked 3 years ago by user579861

How do I use structural induction to show that for all $(a,b) in S$ that $(a+b) = 4k$ for some $k in Bbb Z$?

1 answer

Mathematics Asked 3 years ago by justanotherstudent

Determine if $n$ could be represented by a quadratic form of discriminant $d$

1 answer

Mathematics Asked 3 years ago by jibber032394

$24ml+1=k^2$ has no solution for all $l=1 dots m$

1 answer

Mathematics Asked 3 years ago by Gevorg Hmayakyan

$sigma(n)$ is injective?

1 answer

Mathematics Asked 3 years ago by ferphi

Method to solve an equation

1 answer

Mathematics Asked 3 years ago by Khosrotash

Prove that $19| 2^{2^{6k+2}}+3$ for k = 0,1,2,3....

5 answer

Mathematics Asked 3 years ago by Shlok Jain

How to solve $sqrt{x!y!}=xy$ for $(x,y)inmathbb{Z}_{geq0}timesmathbb{Z}_{geq0}$?

3 answer

Mathematics Asked 3 years ago by Ramez Hindi

Limit points of the set ${frac {varphi(n) }n : nin mathbb{N}}$

1 answer

Mathematics Asked 3 years ago by user-492177

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