Question

If people sharing the same birthday raise their hand, how many hands do you expect to see raised?

score 126 · Answer 1 · 2026-02-23 10:06:10

126

Views

If people sharing the same birthday raise their hand, how many hands do you expect to see raised?

Published on 23 Feb 2026 - 10:06

score 1k · Answer 2 · 2026-03-25 20:41:30

1k

Views

3blue1brown level for Devil's Calculator

Published on 25 Mar 2026 - 20:41

score 739 · Answer 3 · 2026-03-25 17:41:43

739

Views

Are there techniques for quickly seeing patterns in numbers?

Published on 25 Mar 2026 - 17:41

score 1.3k · Answer 4 · 2026-03-30 22:57:27

1.3k

Views

Large database of mathematical constants

Published on 30 Mar 2026 - 22:57

score 84 · Answer 5 · 2019-10-18 19:01:45

84

Views

Person A and Person B communicate to figure out the numbers

Published on 18 Oct 2019 - 19:01

score 109 · Answer 6 · 2026-03-26 06:22:28

109

Views

Primes written in bases $2,...,10$ and sequence that counts number of primes in those representations (a question about values of that sequence)

Published on 26 Mar 2026 - 6:22

score 137 · Answer 7 · 2026-03-27 13:42:17

137

Views

is the recursive function $(x_1+x_2)/(x_2-x_1) = x_3$ ever get to a point where it divides by $0$ if the starting conditions are$ x_1 = 1, x_2= 2$?

Published on 27 Mar 2026 - 13:42

score 141 · Answer 8 · 2026-03-26 04:36:35

141

Views

Is There a "Geometric" Way to Calculate Transcendental Numbers (Monte Carlo Method but for other numbers)?

Published on 26 Mar 2026 - 4:36

score 204 · Answer 9 · 2026-03-26 08:00:27

204

Views

Is it possible to cover an $11 \times 12$ rectangle with $19$ rectangles of $1 \times 6$ or $1 \times 7$?

Published on 26 Mar 2026 - 8:00

score 102 · Answer 10 · 2026-03-28 18:17:10

How would one write a proof that this summation including only a number and it's reverse always add up to the same integer for any number of digits?

score 65 · Answer 11 · 2026-03-28 20:05:08

65

Views

Sudoku prime triples

Published on 28 Mar 2026 - 20:05

score 65 · Answer 12 · 2019-10-23 12:18:09

65

Views

The set of all perfect numbers, amicable pairs, sociable triples of order three, four, etc..., is that set infinite?

Published on 23 Oct 2019 - 12:18

score 63 · Answer 13 · 2026-03-27 06:07:23

63

Views

Can someone explain this strange relationship between arithmetic, quadratic, and cubic means?

Published on 27 Mar 2026 - 6:07

score 36 · Answer 14 · 2026-04-02 20:08:23

36

Views

On the orbits and patterns of this process

Published on 02 Apr 2026 - 20:08

score 1.1k · Answer 15 · 2019-10-26 02:31:08

1.1k

Views

In a club with 99 people, everyone knows at least 67 people. Prove there's a group of 4 people where everyone knows each other

Published on 26 Oct 2019 - 2:31

List Question

If people sharing the same birthday raise their hand, how many hands do you expect to see raised?

3blue1brown level for Devil's Calculator

Are there techniques for quickly seeing patterns in numbers?

Large database of mathematical constants

Person A and Person B communicate to figure out the numbers

Primes written in bases $2,...,10$ and sequence that counts number of primes in those representations (a question about values of that sequence)

is the recursive function $(x_1+x_2)/(x_2-x_1) = x_3$ ever get to a point where it divides by $0$ if the starting conditions are$ x_1 = 1, x_2= 2$?

Is There a "Geometric" Way to Calculate Transcendental Numbers (Monte Carlo Method but for other numbers)?

Is it possible to cover an $11 \times 12$ rectangle with $19$ rectangles of $1 \times 6$ or $1 \times 7$?

How would one write a proof that this summation including only a number and it's reverse always add up to the same integer for any number of digits?

Sudoku prime triples

The set of all perfect numbers, amicable pairs, sociable triples of order three, four, etc..., is that set infinite?

Can someone explain this strange relationship between arithmetic, quadratic, and cubic means?

On the orbits and patterns of this process

In a club with 99 people, everyone knows at least 67 people. Prove there's a group of 4 people where everyone knows each other

Trending Questions

Popular # Hahtags

Popular Questions