Question

How to calculate the sum of a series, whose next value is dependent on the previous value?

score 1.3k · Answer 1 · 2026-03-25 17:40:10

1.3k

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How to calculate the sum of a series, whose next value is dependent on the previous value?

Published on 25 Mar 2026 - 17:40

score 333 · Answer 2 · 2026-03-21 21:21:59

333

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If the sum of the first n terms of an Arithmetic Progression is equal to $n^2 + 3n$

Published on 21 Mar 2026 - 21:21

score 205 · Answer 3 · 2026-03-22 09:58:13

205

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If it is Arithmetic Progression then find the value of s?

Published on 22 Mar 2026 - 9:58

score 89 · Answer 4 · 2026-03-22 13:45:03

89

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Finding an array index mathematically [noob]

Published on 22 Mar 2026 - 13:45

score 68 · Answer 5 · 2026-03-22 15:14:26

68

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Interlacing with arithmetic progressions?

Published on 22 Mar 2026 - 15:14

score 235 · Answer 6 · 2026-03-22 04:59:11

235

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Arithmetic Progression with many answers

Published on 22 Mar 2026 - 4:59

score 55 · Answer 7 · 2026-03-21 17:24:12

55

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Name to a progression with the general term $a_n=a+d\cdot n(n+1)$

Published on 21 Mar 2026 - 17:24

score 87 · Answer 8 · 2026-03-21 23:20:29

87

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Question about arithmetic progression. stuck on one of the answers

Published on 21 Mar 2026 - 23:20

score 953 · Answer 9 · 2026-03-21 19:38:52

953

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Sum of all the numbers in the grid.

Published on 21 Mar 2026 - 19:38

score 50 · Answer 10 · 2026-03-22 00:38:18

50

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Arithmetic Progression Sum of Sequence

Published on 22 Mar 2026 - 0:38

score 7.7k · Answer 11 · 2026-03-25 06:11:08

7.7k

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Sum of even numbers N?

Published on 25 Mar 2026 - 6:11

score 430 · Answer 12 · 2026-03-22 07:02:20

430

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How to sum all odd numbers in range?

Published on 22 Mar 2026 - 7:02

score 101 · Answer 13 · 2026-03-22 04:24:37

101

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If $a,b,c$ are positives such that $a+b+c=\pi/2$ and $\cot(a),\cot(b),\cot(c)$ is in arithmetic progression, find $\cot(a)\cot(c)$

Published on 22 Mar 2026 - 4:24

score 266 · Answer 14 · 2026-03-22 01:23:23

266

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Intuition behind Erdős conjecture on arithmetic progressions

Published on 22 Mar 2026 - 1:23

score 79 · Answer 15 · 2026-03-25 17:44:37

79

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If $p$th, $q$th, $r$th and $s$th terms of an A.P are in G.P. Then show $p-q$, $q-r$, $r-2$ are also in G.P.

Published on 25 Mar 2026 - 17:44

List Question

How to calculate the sum of a series, whose next value is dependent on the previous value?

If the sum of the first n terms of an Arithmetic Progression is equal to $n^2 + 3n$

If it is Arithmetic Progression then find the value of s?

Finding an array index mathematically [noob]

Interlacing with arithmetic progressions?

Arithmetic Progression with many answers

Name to a progression with the general term $a_n=a+d\cdot n(n+1)$

Question about arithmetic progression. stuck on one of the answers

Sum of all the numbers in the grid.

Arithmetic Progression Sum of Sequence

Sum of even numbers N?

How to sum all odd numbers in range?

If $a,b,c$ are positives such that $a+b+c=\pi/2$ and $\cot(a),\cot(b),\cot(c)$ is in arithmetic progression, find $\cot(a)\cot(c)$

Intuition behind Erdős conjecture on arithmetic progressions

If $p$th, $q$th, $r$th and $s$th terms of an A.P are in G.P. Then show $p-q$, $q-r$, $r-2$ are also in G.P.

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