Question

How many numbers from $1$ to $1000$ can be written as the sum of $4$s and $5$s?

score 1.2k · Answer 1 · 2026-04-16 01:54:21

1.2k

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How many numbers from $1$ to $1000$ can be written as the sum of $4$s and $5$s?

Published on 16 Apr 2026 - 1:54

score 150 · Answer 2 · 2026-03-27 00:55:17

150

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Algebra Word Problem - Distance between two towns

Published on 27 Mar 2026 - 0:55

score 157 · Answer 3 · 2026-03-29 14:57:13

157

Views

Finding Closed-form expression for the biggest partition

Published on 29 Mar 2026 - 14:57

score 55 · Answer 4 · 2026-04-10 16:33:48

55

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Frog Jumps - hard time understanding the probability mass distribution

Published on 10 Apr 2026 - 16:33

score 973 · Answer 5 · 2026-04-15 03:09:59

973

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Solving a colour sudoku

Published on 15 Apr 2026 - 3:09

score 52 · Answer 6 · 2026-04-16 20:59:56

52

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Find functions $f$ and $g$ so that $f(x)g'(x)=f'(x)g(x)$ but $g(x)\neq kf(x)$ with $k\in\mathbb{R}$

Published on 16 Apr 2026 - 20:59

score 1.2k · Answer 7 · 2026-04-20 02:29:28

1.2k

Views

Could you generate any positive number given only a few specific operators and operands?

Published on 20 Apr 2026 - 2:29

score 311 · Answer 8 · 2026-04-14 15:28:39

311

Views

Prove two line segments are perpendicular to each other in a triangle with orthocenter

Published on 14 Apr 2026 - 15:28

score 155 · Answer 9 · 2026-04-11 20:43:48

155

Views

Set of possibilities for Simpson paradox

Published on 11 Apr 2026 - 20:43

score 66 · Answer 10 · 2026-04-15 23:44:08

66

Views

(Puzzle) Possible length of bar to be snapped

Published on 15 Apr 2026 - 23:44

score 50 · Answer 11 · 2026-04-15 04:53:29

50

Views

Different Sets of "K-up" Numbers

Published on 15 Apr 2026 - 4:53

score 332 · Answer 12 · 2026-04-17 09:37:21

332

Views

minimal average distances between $n$ nodes in a directed graph

Published on 17 Apr 2026 - 9:37

score 588 · Answer 13 · 2026-04-12 03:18:56

588

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Are two pieces of the jigsaw puzzle equally likely to fit?

Published on 12 Apr 2026 - 3:18

score 55 · Answer 14 · 2026-04-11 23:22:45

55

Views

Can $2017$ be written as sum of two elements of a certain set?

Published on 11 Apr 2026 - 23:22

score 210 · Answer 15 · 2026-04-15 22:26:26

Suppose f(x) is a polynomial with real coefficient and $f(x)>=0$ $x \in R$ let $g(x)=f(x)+f^{'}(x) +f^{"}(x)+..$. prove that $g(x)>=0 for all x\in R$

List Question

How many numbers from $1$ to $1000$ can be written as the sum of $4$s and $5$s?

Algebra Word Problem - Distance between two towns

Finding Closed-form expression for the biggest partition

Frog Jumps - hard time understanding the probability mass distribution

Solving a colour sudoku

Find functions $f$ and $g$ so that $f(x)g'(x)=f'(x)g(x)$ but $g(x)\neq kf(x)$ with $k\in\mathbb{R}$

Could you generate any positive number given only a few specific operators and operands?

Prove two line segments are perpendicular to each other in a triangle with orthocenter

Set of possibilities for Simpson paradox

(Puzzle) Possible length of bar to be snapped

Different Sets of "K-up" Numbers

minimal average distances between $n$ nodes in a directed graph

Are two pieces of the jigsaw puzzle equally likely to fit?

Can $2017$ be written as sum of two elements of a certain set?

Suppose f(x) is a polynomial with real coefficient and $f(x)>=0$ $x \in R$ let $g(x)=f(x)+f^{'}(x) +f^{"}(x)+..$. prove that $g(x)>=0 for all x\in R$

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