List questions from problem-solving

Published on 31 Jan 2016 - 9:34

248

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Variation of the opaque forest problem (a.k.a farmyard problem)

Published on 27 Mar 2026 - 12:03

4.8k

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Find a thousand natural numbers such that their sum equals their product

Published on 01 Feb 2016 - 13:18

108

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I need some help with Geometry. Is this a correct answer to this problem?

Published on 01 Feb 2016 - 13:52

336

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Why is the solution to $\sqrt{6-5x}=x$ only $x=1$ and not $x=-6$?

Published on 02 Feb 2016 - 3:15

45

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Parameterization which is closed under addition

Published on 03 Apr 2026 - 7:32

143

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solve $54 x + 16 y = 2400$ for integer values of x,y

Published on 30 Mar 2026 - 0:24

236

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Let $S=[0,1) \cup [2,3]$ and $f:S \to \Bbb R$ be a strictly increasing map such that $f(S)$ is connected. Which of the following statements is true?

Published on 29 Mar 2026 - 11:08

1.3k

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How to find unknowns $w_1,w_2,w_3$ that satisfy $t=w_1f_1 + w_2f_2 + w_3f_3$?

Published on 07 Feb 2016 - 7:49

225

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If $y'+y=|x|$ and $y(-1)=0$, what is $y(1)$?

Published on 02 Apr 2026 - 1:25

165

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Finding the rate at which the space diagonal of a cube is decreasing

Published on 03 Apr 2026 - 16:26

3k

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Mpg to l/100km conversion problem?

Published on 23 Mar 2026 - 0:08

38

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How can we solve this system of linear inequalities?

Published on 08 Feb 2016 - 20:43

147

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Survival bias and probability

Published on 01 Apr 2026 - 1:35

112

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How do I derive the cubic formula? (without substitutions)

Published on 29 Mar 2026 - 5:42

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Combinatorics Question with bridges and inability to cross over each other

Variation of the opaque forest problem (a.k.a farmyard problem)

Find a thousand natural numbers such that their sum equals their product

I need some help with Geometry. Is this a correct answer to this problem?

Why is the solution to $\sqrt{6-5x}=x$ only $x=1$ and not $x=-6$?

Parameterization which is closed under addition

solve $54 x + 16 y = 2400$ for integer values of x,y

Let $S=[0,1) \cup [2,3]$ and $f:S \to \Bbb R$ be a strictly increasing map such that $f(S)$ is connected. Which of the following statements is true?

How to find unknowns $w_1,w_2,w_3$ that satisfy $t=w_1f_1 + w_2f_2 + w_3f_3$?

If $y'+y=|x|$ and $y(-1)=0$, what is $y(1)$?

Finding the rate at which the space diagonal of a cube is decreasing

Mpg to l/100km conversion problem?

How can we solve this system of linear inequalities?

Survival bias and probability

How do I derive the cubic formula? (without substitutions)

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