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Top Questions
16
votes
Optimal strategy for guessing a binary string
combinatorics
puzzle
information-theory
combinatorial-game-theory
asked Mar 30, 2021 at 11:54
math.stackexchange.com
8
votes
An odd property of Egyptian fractions
number-theory
asked Feb 7, 2016 at 16:03
math.stackexchange.com
6
votes
An Average of Probabilities
probability
asked Jul 12, 2015 at 19:29
math.stackexchange.com
Top Answers
88
Is it possible to find an infinite set of points in the plane where the distance between any pair is rational?
math.stackexchange.com
73
If $A+B=AB$ then $AB=BA$
math.stackexchange.com
58
On irrationality of natural logarithm
math.stackexchange.com
48
How to prove the following number theory puzzle
math.stackexchange.com
46
Drunk man with a set of keys.
math.stackexchange.com
42
How to prove that the Fibonacci sequence is periodic mod 5 without using induction?
math.stackexchange.com
41
Find three non-constant, pairwise unequal functions $f,g,h:\mathbb R\to \mathbb R$...
math.stackexchange.com
40
Product of all elements in finite group
math.stackexchange.com
37
Why is $0.63212$ the probability of a $\frac1n$-probability event happening in $n$ trials?
math.stackexchange.com
35
Is there any conjecture that has been proved to be solvable/provable but whose direct solution/proof is not yet known?
math.stackexchange.com
31
Expected Number of Single Socks when Matching Socks
math.stackexchange.com
30
Ms Black, Ms Blue and Ms Green - Is there really a unique answer?
math.stackexchange.com
30
Is this a modified Monty Hall problem (numbered doors)?
math.stackexchange.com
29
Confusing probability question
math.stackexchange.com
27
In a deck of cards, do a queen and a non-queen have equal chances of being the card that follows the first queen?
math.stackexchange.com
25
Which is the explanation of the identity $\sum_{k=0}^n {n \choose k}k^2 = 2^{n-2}n(n+1)$?
math.stackexchange.com
23
A probability theory question about independent coin tosses by two players
math.stackexchange.com
22
Are the rationals on a unit circle dense?
math.stackexchange.com
22
Relationship between the squares of first n natural numbers and first n natural odd numbers.
math.stackexchange.com
20
A square integer has more than a million digits. What is the least amount of even digits the square can contain?
math.stackexchange.com
20
How many distinguishable outcomes from rolling 6 identical dice?
math.stackexchange.com
19
Proof that $\sqrt6 - \sqrt2 - \sqrt3$ is irrational.
math.stackexchange.com
19
If we draw cards from a deck without replacement, how many cards would I have to draw on average until I obtain two kings
math.stackexchange.com
18
Find the value of $x$ such that $\sqrt{4+\sqrt{4-\sqrt{4+\sqrt{4-x}}}}=x$
math.stackexchange.com
18
When calculating averages, why can we treat exploding die as if they're independent?
math.stackexchange.com
18
Rolling a die until two rolls sum to seven
math.stackexchange.com
18
How can we prove that in order to the product to be maximum, the addends must be equal?
math.stackexchange.com
18
Monty Hall Problem-Probability Paradox
math.stackexchange.com
17
Probability of winning a game by rolling the die first
math.stackexchange.com
16
What isn't a vector space?
math.stackexchange.com
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