List questions from natural-numbers

Published on 29 Dec 2013 - 4:16

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What's the digit "a" in this number?

Published on 04 Jan 2014 - 13:25

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Prove that $4$ is the only solution to $2+2$.

Published on 04 Jan 2014 - 22:21

128

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Prove any $k\in\mathbb{N}$ can be created using sum of $a_{n}=2a_{n-1}-\left\lfloor \frac{a_{n-1}}{2}\right\rfloor ,a_{1}=1$

Published on 11 Jan 2014 - 15:47

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Two Perfect Squares--$(3n+1) \& (4n+1)$.

Published on 11 Jan 2014 - 16:54

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map sum of square integers to a contiguous range of integers

Published on 13 Jan 2014 - 12:21

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How Can I find the summation of divisors of $n^p$.

Published on 17 Jan 2014 - 18:40

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Natural numbers in Set Theory

Published on 28 Mar 2026 - 20:52

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Properties of Natural Numbers and Mathematical Induction

Published on 24 Jan 2014 - 17:04

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solve equation in positive integers

Published on 02 Feb 2014 - 22:47

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Proof $\prod_{i = 1}^n \frac{n + i}{2i-3} = 2^n(1-2n)$ using inducction

Published on 03 Feb 2014 - 20:49

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Discrete mathematics proof relating to Fermat's Theorem

Published on 06 Feb 2014 - 0:24

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Discrete Mathematics Proof Question

Published on 06 Feb 2014 - 1:31

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Are there any interesting examples of subsets of $\mathbf{N}$ that are known to be nonempty, but of which no elements are known?

Published on 06 Feb 2014 - 3:11

73

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Alternative Bijection from $\mathbb{N}$ to its finite subsets

Published on 10 Feb 2014 - 0:28

List Question

Modulo over rational numbers?

What's the digit "a" in this number?

Prove that $4$ is the only solution to $2+2$.

Prove any $k\in\mathbb{N}$ can be created using sum of $a_{n}=2a_{n-1}-\left\lfloor \frac{a_{n-1}}{2}\right\rfloor ,a_{1}=1$

Two Perfect Squares--$(3n+1) \& (4n+1)$.

map sum of square integers to a contiguous range of integers

How Can I find the summation of divisors of $n^p$.

Natural numbers in Set Theory

Properties of Natural Numbers and Mathematical Induction

solve equation in positive integers

Proof $\prod_{i = 1}^n \frac{n + i}{2i-3} = 2^n(1-2n)$ using inducction

Discrete mathematics proof relating to Fermat's Theorem

Discrete Mathematics Proof Question

Are there any interesting examples of subsets of $\mathbf{N}$ that are known to be nonempty, but of which no elements are known?

Alternative Bijection from $\mathbb{N}$ to its finite subsets

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