List questions from arithmetic-progressions

Published on 25 Jan 2013 - 1:45

268

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Proof by induction that $(n+1)+(n+2)\cdots+2n=\frac{1}{2}n(3n+1)$

Published on 18 Mar 2013 - 18:54

89

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Identifying relation between numbers based on equation relating them

Published on 27 Mar 2026 - 11:37

93

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Maximum Value of Product of powers of Positive Numbers

Published on 28 Mar 2026 - 18:17

121

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Understanding Arithmetic Progression in $[N]$ vs. $\mathbb{Z}_N$

Published on 26 Mar 2026 - 22:17

121

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Minimizing $|x_1-x_2|+|x_2-x_3|$ given two conditions

Published on 10 Aug 2020 - 22:03

330

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Arithmetic progression $(a,b,c)$ with $a^2+b^2=c^2$ and $\gcd(a,b,c) = 1$

Published on 28 Mar 2026 - 14:55

43

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Using wavelet decompositions to solve Problems in additive combinatorics

Published on 23 Feb 2026 - 11:16

91

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Congruent sets of an arithmetic sequence and a geometric sequence

Published on 27 Mar 2026 - 10:16

122

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Number of combinations for which $x_1+x_2+x_3=100$ if for every $3\ge i\ge 1$, $x_i$ is a non negative integer with $40\ge x_i$

Published on 18 Aug 2020 - 13:38

50

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Prove the following statment $\frac{S_m-S_n}{S_{m+n}}=\frac{m-n}{m+n}$ if $S_m$, $S_n$ and $S_{m+n}$ are arthmetic series

Published on 22 Aug 2020 - 6:50

1.2k

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What is the sum of the 12th to 20th terms (inclusive) of the arithmetic sequence 7,12,17,22,...?

Published on 05 Sep 2020 - 12:24

166

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Proving $a(a+d)(a+2d)(a+3d)+d^4$, with integer $a$ and $d$, is a perfect square

Published on 06 Sep 2020 - 5:44

295

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Prime numbers in an arithmetic progression

Published on 07 Sep 2020 - 5:43

490

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$1+2+3+...+n-1$ sum of the first $n-1$ terms

Published on 08 Sep 2020 - 6:27

List Question

Proof by induction that $ \sum_{i=1}^n 3i-2 = \frac{n(3n-1)}{2} $

Proof by induction that $(n+1)+(n+2)\cdots+2n=\frac{1}{2}n(3n+1)$

Identifying relation between numbers based on equation relating them

Maximum Value of Product of powers of Positive Numbers

Understanding Arithmetic Progression in $[N]$ vs. $\mathbb{Z}_N$

Minimizing $|x_1-x_2|+|x_2-x_3|$ given two conditions

Arithmetic progression $(a,b,c)$ with $a^2+b^2=c^2$ and $\gcd(a,b,c) = 1$

Using wavelet decompositions to solve Problems in additive combinatorics

Congruent sets of an arithmetic sequence and a geometric sequence

Number of combinations for which $x_1+x_2+x_3=100$ if for every $3\ge i\ge 1$, $x_i$ is a non negative integer with $40\ge x_i$

Prove the following statment $\frac{S_m-S_n}{S_{m+n}}=\frac{m-n}{m+n}$ if $S_m$, $S_n$ and $S_{m+n}$ are arthmetic series

What is the sum of the 12th to 20th terms (inclusive) of the arithmetic sequence 7,12,17,22,...?

Proving $a(a+d)(a+2d)(a+3d)+d^4$, with integer $a$ and $d$, is a perfect square

Prime numbers in an arithmetic progression

$1+2+3+...+n-1$ sum of the first $n-1$ terms

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