Question

question from Saint Petersburg selection competition of 1989, about determining the difference between the size of two sets $A$ and $B$

score 121 · Answer 1 · 2026-04-13 15:10:36

121

Views

question from Saint Petersburg selection competition of 1989, about determining the difference between the size of two sets $A$ and $B$

Published on 13 Apr 2026 - 15:10

score 241 · Answer 2 · 2026-04-17 10:02:31

241

Views

Five pills problem from exercises based on Feynman's lectures

Published on 17 Apr 2026 - 10:02

score 608 · Answer 3 · 2026-04-16 14:15:43

608

Views

Point $B$ lies on line segment $\overline{AC}$ with $AB = 16$ , $BC = 4$ .

Published on 16 Apr 2026 - 14:15

score 104 · Answer 4 · 2026-04-15 11:35:57

104

Views

Prove that $83$ divides $p$ .

Published on 15 Apr 2026 - 11:35

score 72 · Answer 5 · 2026-04-10 13:20:50

72

Views

Prediction of a Future Value of a Random Variable

Published on 10 Apr 2026 - 13:20

score 900 · Answer 6 · 2026-04-17 14:37:41

900

Views

Prove that $(P \leftrightarrow Q) \wedge (R \leftrightarrow S) \implies (P \vee R) \leftrightarrow (Q \vee S).$

Published on 17 Apr 2026 - 14:37

score 81 · Answer 7 · 2026-04-17 20:44:34

81

Views

Find the sum of :- $2017(2017^{100}) + 2016(2017^{101} + 2017^{102} + ... + 2017^{2016})$ .

Published on 17 Apr 2026 - 20:44

score 125 · Answer 8 · 2026-04-15 10:57:11

125

Views

Basic probability: conditioning equations

Published on 15 Apr 2026 - 10:57

score 98 · Answer 9 · 2026-04-16 12:58:01

$15$ sheets of paper of various sizes and shapes lie on a desktop covering it completely. The sheets may overlap and may even hang over the edge.

score 132 · Answer 10 · 2026-04-14 08:18:14

132

Views

Grassmanian is a manifold (Hirsch)

Published on 14 Apr 2026 - 8:18

score 263 · Answer 11 · 2026-03-25 14:24:38

263

Views

$ABCD$ is a square, with $K$ and $L$ are points on $BC$ and $DC$ respectively . If $AM \perp LK$ AND $\angle AKM = \angle AKB$ , Find $\angle LAK$ .

Published on 25 Mar 2026 - 14:24

score 2.1k · Answer 12 · 2026-03-25 23:22:52

2.1k

Views

Homogenization, what it is in inequalities and how to utilize it to its fullest.

Published on 25 Mar 2026 - 23:22

score 71 · Answer 13 · 2026-03-26 23:10:52

71

Views

question from Euclid 2011 about proving that $\frac{(a^3+b^3)c}{a^2+b^2}+\frac{(b^3+c^3)a}{b^2+c^2}+\frac{(c^3+a^3)}{c^2+a^2}\ge 1$

Published on 26 Mar 2026 - 23:10

score 130 · Answer 14 · 2026-04-14 15:35:53

130

Views

question from South Korean selection exam 1998, about proving that an inequality holds true if $a+b+c=abc$

Published on 14 Apr 2026 - 15:35

score 71 · Answer 15 · 2026-04-11 10:37:25

71

Views

Why is the question valid? How can I make sense of it?

Published on 11 Apr 2026 - 10:37

List Question

question from Saint Petersburg selection competition of 1989, about determining the difference between the size of two sets $A$ and $B$

Five pills problem from exercises based on Feynman's lectures

Point $B$ lies on line segment $\overline{AC}$ with $AB = 16$ , $BC = 4$ .

Prove that $83$ divides $p$ .

Prediction of a Future Value of a Random Variable

Prove that $(P \leftrightarrow Q) \wedge (R \leftrightarrow S) \implies (P \vee R) \leftrightarrow (Q \vee S).$

Find the sum of :- $2017(2017^{100}) + 2016(2017^{101} + 2017^{102} + ... + 2017^{2016})$ .

Basic probability: conditioning equations

$15$ sheets of paper of various sizes and shapes lie on a desktop covering it completely. The sheets may overlap and may even hang over the edge.

Grassmanian is a manifold (Hirsch)

$ABCD$ is a square, with $K$ and $L$ are points on $BC$ and $DC$ respectively . If $AM \perp LK$ AND $\angle AKM = \angle AKB$ , Find $\angle LAK$ .

Homogenization, what it is in inequalities and how to utilize it to its fullest.

question from Euclid 2011 about proving that $\frac{(a^3+b^3)c}{a^2+b^2}+\frac{(b^3+c^3)a}{b^2+c^2}+\frac{(c^3+a^3)}{c^2+a^2}\ge 1$

question from South Korean selection exam 1998, about proving that an inequality holds true if $a+b+c=abc$

Why is the question valid? How can I make sense of it?

Trending Questions

Popular # Hahtags

Popular Questions