Question

Matchstick dice game winning strategy

score 135 · Answer 1 · 2026-04-16 20:38:12

135

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Matchstick dice game winning strategy

Published on 16 Apr 2026 - 20:38

score 104 · Answer 2 · 2026-04-15 16:49:56

104

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Let $T(z)=\frac{a_1z + b_1}{c_1z+d_1}$ $S(z)=\frac{a_2z+b_2}{c_2z+d_2}$ be two Mobius transformations. Show that if ...

Published on 15 Apr 2026 - 16:49

score 46 · Answer 3 · 2026-04-11 00:17:49

46

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Question on the general approach to solving mathematical problems

Published on 11 Apr 2026 - 0:17

score 51 · Answer 4 · 2026-04-16 12:23:28

51

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Come up with a real inner product space $V$ and $T\in \mathcal L(V) $ and real numbers b, c with $ b^2 < 4c $ so that $T^2 + bT +cI$ is not invertible

Published on 16 Apr 2026 - 12:23

score 66 · Answer 5 · 2026-04-14 12:10:52

66

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Find solution of particular integral transform

Published on 14 Apr 2026 - 12:10

score 101 · Answer 6 · 2026-04-14 11:52:46

101

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IMO 2001 shortlist number theory problem

Published on 14 Apr 2026 - 11:52

score 323 · Answer 7 · 2026-04-15 19:26:16

323

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Show that $f(x) = x^5 – 10x + 2 \in \mathbb Q[x]$ is not solvable by radicals.

Published on 15 Apr 2026 - 19:26

score 658 · Answer 8 · 2026-04-12 11:27:56

658

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How to find all values of for a given homogeneous system that has a nontrivial solution from a given matrix?

Published on 12 Apr 2026 - 11:27

score 282 · Answer 9 · 2026-04-08 19:23:59

282

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Difficult geometry Olympiad symmedian problem

Published on 08 Apr 2026 - 19:23

score 79 · Answer 10 · 2026-04-16 04:09:21

Doubling a certain number and then subtracting 5 gives the same result as subtracting 10 from the number and then multiplying by 7. Find the number.

score 109 · Answer 11 · 2026-04-16 23:49:44

109

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How many digit number I have to write if I write $2^n$ exponential sequence from 1 to $2^{1000}$?

Published on 16 Apr 2026 - 23:49

score 91 · Answer 12 · 2026-04-15 01:35:51

91

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Is it possible to calculate how many digit number I have to write if I write $n^2$ sequence from 1 to $1000^2$ without using calculator?

Published on 15 Apr 2026 - 1:35

score 176 · Answer 13 · 2026-04-13 18:53:42

176

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Solving $\cos3x=-\sin3x$, for $x \in [0,2\pi]$

Published on 13 Apr 2026 - 18:53

score 95 · Answer 14 · 2026-04-15 08:02:44

95

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Diophantine plane $ax + by + cz = 0$ with $\gcd(a,b)=\gcd(y,z)=1$.

Published on 15 Apr 2026 - 8:02

score 216 · Answer 15 · 2026-04-16 14:33:12

216

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Find the inverse function of $f(x):=\sqrt x-\sqrt {4-x}+2$

Published on 16 Apr 2026 - 14:33

List Question

Matchstick dice game winning strategy

Let $T(z)=\frac{a_1z + b_1}{c_1z+d_1}$ $S(z)=\frac{a_2z+b_2}{c_2z+d_2}$ be two Mobius transformations. Show that if ...

Question on the general approach to solving mathematical problems

Come up with a real inner product space $V$ and $T\in \mathcal L(V) $ and real numbers b, c with $ b^2 < 4c $ so that $T^2 + bT +cI$ is not invertible

Find solution of particular integral transform

IMO 2001 shortlist number theory problem

Show that $f(x) = x^5 – 10x + 2 \in \mathbb Q[x]$ is not solvable by radicals.

How to find all values of for a given homogeneous system that has a nontrivial solution from a given matrix?

Difficult geometry Olympiad symmedian problem

Doubling a certain number and then subtracting 5 gives the same result as subtracting 10 from the number and then multiplying by 7. Find the number.

How many digit number I have to write if I write $2^n$ exponential sequence from 1 to $2^{1000}$?

Is it possible to calculate how many digit number I have to write if I write $n^2$ sequence from 1 to $1000^2$ without using calculator?

Solving $\cos3x=-\sin3x$, for $x \in [0,2\pi]$

Diophantine plane $ax + by + cz = 0$ with $\gcd(a,b)=\gcd(y,z)=1$.

Find the inverse function of $f(x):=\sqrt x-\sqrt {4-x}+2$

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