User vadim123

413 votes

Can the golden ratio accurately be expressed in terms of $e$ and $\pi$

answered Jul 28, 2013 at 21:13

190 votes

Zero divided by zero must be equal to zero

answered Dec 1, 2015 at 15:26

86 votes

Accepted

What is $-i$ exactly?

answered May 19, 2013 at 14:37

71 votes

Accepted

Are imaginary numbers really incomparable?

answered Feb 7, 2018 at 22:03

71 votes

Accepted

Is indefinite integration non-linear?

answered Dec 15, 2014 at 21:14

61 votes

Accepted

Why can't you pick socks using coin flips?

answered Mar 17, 2014 at 15:56

59 votes

Proof that the trace of a matrix is the sum of its eigenvalues

answered Oct 30, 2013 at 22:15

59 votes

Function whose third derivative is itself.

answered Dec 24, 2014 at 18:48

57 votes

How to find the mod of this large number

answered Dec 13, 2016 at 5:37

53 votes

$2+2 = 5$? error in proof

answered Aug 1, 2013 at 19:16

44 votes

Accepted

Is a proof also "evidence"?

answered Jun 18, 2016 at 2:24

44 votes

Accepted

LaTeX/TeX Vs. Mathematica for Typesetting

answered Feb 20, 2014 at 23:09

44 votes

Accepted

How many words (i.e. not "math" symbols") should I use in my proofs? ${}{}$

answered Mar 21, 2018 at 2:37

43 votes

Show that these two numbers have the same number of digits

answered Feb 22, 2014 at 3:42

42 votes

Picking two random real numbers between 0 and 1, why isn't the probability that the first is greater than the second exactly 50%?

answered Dec 24, 2015 at 0:35

41 votes

What is the fallacy in this proof?

answered Nov 23, 2015 at 18:12

37 votes

Accepted

Why is there antagonism towards extended real numbers?

answered Feb 23, 2014 at 15:19

35 votes

After switching a lamp on and off infinitely many times in one minute, is it on or off?

answered Jun 30, 2015 at 13:31

35 votes

Why the determinant of a matrix with the sum of each row's elements equal 0 is 0?

answered Jul 25, 2015 at 15:42

35 votes

Why can there be an infinite difference between two functions as x grows large, but a ratio of 1?

answered Sep 29, 2015 at 1:13

31 votes

Simple combinatorics question - caught off guard!

answered Mar 12, 2014 at 3:10

31 votes

Accepted

Is it possible to calculate the arithmetic mean from the geometric mean?

answered Jun 10, 2014 at 14:17

30 votes

What's going on with this 5-line proof of Fermat's Last Theorem?

answered Jun 26, 2016 at 22:34

30 votes

Accepted

Is $1 = [1] = [[1]] = [[[ 1 ]]], \ldots$?

answered May 1, 2017 at 0:32

29 votes

Accepted

What is the largest set for which its set of self bijections is countable?

answered Dec 24, 2015 at 2:09

28 votes

Example of uncomputable but definable number

answered May 4, 2015 at 15:53

27 votes

I roll a die repeatedly until I get 6, and then count the number of 3s I got. What's my expected number of 3s?

answered Sep 6, 2015 at 18:56

26 votes

Accepted

Confusion with regards to the phrase "exactly one of the events occurs"

answered Apr 3, 2018 at 0:20

24 votes

What is the value of $2^{3000}$

answered Apr 26, 2013 at 13:43

23 votes

Why is there no "remainder" in multiplication

answered Sep 28, 2013 at 14:55

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2,029 Answers

Can the golden ratio accurately be expressed in terms of $e$ and $\pi$

Zero divided by zero must be equal to zero

What is $-i$ exactly?

Are imaginary numbers really incomparable?

Is indefinite integration non-linear?

Why can't you pick socks using coin flips?

Proof that the trace of a matrix is the sum of its eigenvalues

Function whose third derivative is itself.

How to find the mod of this large number

$2+2 = 5$? error in proof

Is a proof also "evidence"?

LaTeX/TeX Vs. Mathematica for Typesetting

How many words (i.e. not "math" symbols") should I use in my proofs? ${}{}$

Show that these two numbers have the same number of digits

Picking two random real numbers between 0 and 1, why isn't the probability that the first is greater than the second exactly 50%?

What is the fallacy in this proof?

Why is there antagonism towards extended real numbers?

After switching a lamp on and off infinitely many times in one minute, is it on or off?

Why the determinant of a matrix with the sum of each row's elements equal 0 is 0?

Why can there be an infinite difference between two functions as x grows large, but a ratio of 1?

Simple combinatorics question - caught off guard!

Is it possible to calculate the arithmetic mean from the geometric mean?

What's going on with this 5-line proof of Fermat's Last Theorem?

Is $1 = [1] = [[1]] = [[[ 1 ]]], \ldots$?

What is the largest set for which its set of self bijections is countable?

Example of uncomputable but definable number

I roll a die repeatedly until I get 6, and then count the number of 3s I got. What's my expected number of 3s?

Confusion with regards to the phrase "exactly one of the events occurs"

What is the value of $2^{3000}$

Why is there no "remainder" in multiplication