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NoChance
  • Member for 10 years, 10 months
  • Last seen more than a month ago
1533 votes
86 answers
581k views

Visually stunning math concepts which are easy to explain

  • 811
1206 votes
26 answers
126k views

Is $\frac{\textrm{d}y}{\textrm{d}x}$ not a ratio?

  • 15k
615 votes
8 answers
42k views

Why is $1 - \frac{1}{1 - \frac{1}{1 - \ldots}}$ not real?

  • 5,710
596 votes
40 answers
52k views

Examples of patterns that eventually fail

  • 2,233
524 votes
37 answers
70k views

Do complex numbers really exist?

  • 1,605
513 votes
22 answers
84k views

What are imaginary numbers?

339 votes
107 answers
33k views

Surprising identities / equations

  • 60.7k
297 votes
39 answers
58k views

One question to know if the number is 1, 2 or 3

  • 765
280 votes
63 answers
24k views

Funny identities [closed]

250 votes
20 answers
49k views

Conjectures that have been disproved with extremely large counterexamples?

  • 13.7k
221 votes
16 answers
10k views

Optimizing response times of an ambulance corp: short-term versus average

  • 1,483
220 votes
22 answers
193k views

How to check if a point is inside a rectangle?

  • 2,415
215 votes
4 answers
36k views

How do I convince someone that $1+1=2$ may not necessarily be true?

  • 2,169
210 votes
9 answers
11k views

What does $2^x$ really mean when $x$ is not an integer?

  • 3,857
187 votes
9 answers
11k views

What Does it Really Mean to Have Different Kinds of Infinities?

182 votes
14 answers
16k views

Why $\sqrt{-1 \cdot {-1}} \neq \sqrt{-1}^2$?

  • 2,023
159 votes
15 answers
328k views

Is there a general formula for solving Quartic (Degree $4$) equations?

  • 3,291
147 votes
10 answers
92k views

The median minimizes the sum of absolute deviations (the $ {\ell}_{1} $ norm)

  • 1,857
126 votes
19 answers
6k views

Past open problems with sudden and easy-to-understand solutions

115 votes
8 answers
74k views

Why is the derivative of a circle's area its perimeter (and similarly for spheres)?

  • 8,551
107 votes
9 answers
34k views

If I flip a coin 1000 times in a row and it lands on heads all 1000 times, what is the probability that it's an unfair coin?

96 votes
10 answers
106k views

Given a die, what is the probability that the second roll of a die will be less than the first roll?

95 votes
21 answers
19k views

How do you explain the concept of logarithm to a five year old?

  • 1,255
94 votes
7 answers
6k views

Why are all the interesting constants so small? [closed]

  • 1,765
92 votes
14 answers
100k views

Why can't you square both sides of an equation?

  • 3,155
89 votes
34 answers
23k views

Easy math proofs or visual examples to make high school students enthusiastic about math [closed]

  • 2,034
89 votes
7 answers
8k views

$1=2$ | Continued fraction fallacy

  • 4,911
86 votes
11 answers
30k views

What is a simple example of an unprovable statement?

79 votes
13 answers
20k views

Stirling's formula: proof?

  • 979
76 votes
3 answers
7k views

Why is $i! = 0.498015668 - 0.154949828i$?

  • 783
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