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Misha Lavrov
  • Member for 5 years, 6 months
  • Last seen this week
119 votes
Accepted

A multiplication algorithm found in a book by Paul Erdős: how does it work?

110 votes

What's new in higher dimensions?

93 votes

How can I justify this without determining the determinant?

61 votes
Accepted

Choosing office hours to maximise number of students who can attend at least one time slot

59 votes
Accepted

Fallacious proof involving trigonometry

54 votes
Accepted

Is this graph a planar graph or not?

50 votes

Notation for an interval when you don't know which bound is greater

44 votes
Accepted

Cubic formula gives the wrong result (triple checked)

42 votes
Accepted

Punch 2000 holes in 2000 polygons with 1000 needles

39 votes

What does this converge to and why?

35 votes
Accepted

How to colour the US map with Yellow, Green, Red and Blue to minimize the number of states with the color of Green

34 votes

Die fixed so it can't roll the same number twice in a row, using markov chains?

33 votes

Painting the plane, and finding points one unit apart

29 votes
Accepted

Rubik's cube function

28 votes
Accepted

Determine if this series converges or diverges

28 votes
Accepted

totient function series diverges?

27 votes
Accepted

Why is this proof for the four color theorem considered wrong?

26 votes
Accepted

How to tell whether two graphs are isomorphic?

25 votes

Is Bayes' Theorem really that interesting?

24 votes
Accepted

What is the smallest digraph whose reflexive, symmetric, transitive closures (in all combinations) are distinct?

23 votes

Proving the set of the strictly increasing sequences of natural numbers is not enumerable.

22 votes

Examples of simple but highly unintuitive results?

22 votes
Accepted

Probability of two people meeting in a given square grid.

22 votes
Accepted

A magic trick - find out the fifth card if four is given

20 votes

Is there a way to generate individual uniformly distributed points on a sphere from a fixed amount of random real numbers per point?

20 votes

Does taking the dot product of two column vectors involve converting one of the vectors into row vectors first?

19 votes
Accepted

Are there infinitely many Fermat prime pairs?

19 votes

if two computers are playing tic-tac-toe, but they are choosing their squares randomly, what is the chance for X to win?

18 votes
Accepted

Prove that $76$ raised to any integer power and then divided by $100$ (ignoring the remainder) is always divisible by $57$

18 votes
Accepted

Arrange all numbers from 1 to n such that no 3 of them are in Arithmetic Progression

1
2 3 4 5
102