List questions from solution-verification

Published on 14 Apr 2026 - 23:52

114

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Verifying that $(A \times B) \cap (C \times D) = (A \cap C) \times (B \cap D)$

Published on 15 Apr 2026 - 10:38

258

Views

Proving that $\sum_{j=0}^n {n \choose j} = {n \choose 0} + ... + {n \choose n} = 2^n$

Published on 15 Apr 2026 - 17:24

115

Views

Possible criterion for proving parallelogram.

Published on 28 Mar 2026 - 13:32

86

Views

Doubt about showing $1+1+2+2+2+2$ is not a class equation

Published on 15 Apr 2026 - 9:50

70

Views

Solve $5x+11y=4\pmod{13}$

Published on 15 Apr 2026 - 16:11

137

Views

Each countable base of a topology contains countable subfamily which is also a base

Published on 16 Apr 2026 - 14:07

90

Views

The union of all the possible intersections of sets

Published on 13 Apr 2026 - 21:00

438

Views

total number of list of delegates in this question

Published on 09 Apr 2026 - 7:11

189

Views

$f(n)=n+\lfloor\sqrt{n}\rfloor$. Prove for all $m\in \mathbb{N}$, the sequence $m,f(m),f(f(m)),..$ contains a perfect square

Published on 17 Apr 2026 - 12:22

100

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Number of ways to select the election dates

Published on 11 Apr 2026 - 6:53

73

Views

If $U \leq \mathbb{R}^4$, $\dim(U) =3$ and $\langle(0,0,0,1)\rangle \cap U = \{0\}$ then $U = \langle(1,0,0,0), (0,1,0,0), (0,0,1,0)\rangle$

Published on 16 Apr 2026 - 6:06

699

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Area between two inverse function?

Published on 12 Apr 2026 - 23:34

328

Views

what is the volume of a tilted glass

Published on 08 Apr 2026 - 23:15

549

Views

Understanding Rudin's proof of: Every bounded sequence in $R^k$ contains a convergent sequence

Published on 13 Apr 2026 - 21:33

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How to calculate MSE?

Verifying that $(A \times B) \cap (C \times D) = (A \cap C) \times (B \cap D)$

Proving that $\sum_{j=0}^n {n \choose j} = {n \choose 0} + ... + {n \choose n} = 2^n$

Possible criterion for proving parallelogram.

Doubt about showing $1+1+2+2+2+2$ is not a class equation

Solve $5x+11y=4\pmod{13}$

Each countable base of a topology contains countable subfamily which is also a base

The union of all the possible intersections of sets

total number of list of delegates in this question

$f(n)=n+\lfloor\sqrt{n}\rfloor$. Prove for all $m\in \mathbb{N}$, the sequence $m,f(m),f(f(m)),..$ contains a perfect square

Number of ways to select the election dates

If $U \leq \mathbb{R}^4$, $\dim(U) =3$ and $\langle(0,0,0,1)\rangle \cap U = \{0\}$ then $U = \langle(1,0,0,0), (0,1,0,0), (0,0,1,0)\rangle$

Area between two inverse function?

what is the volume of a tilted glass

Understanding Rudin's proof of: Every bounded sequence in $R^k$ contains a convergent sequence

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