why is that $1+2+3+4+5+6+…. = -1/12$?
4340
Why does $1+2+3+\cdots = -\frac{1}{12}$?
59818
Why $(-2)^{2.5}$ isn't equal to $((-2)^{25})^{1/10}$?
107390
Why is (-1)(-1) = 1?
34430
Why does $(\frac{p-1}{2}!)^2 = (-1)^{\frac{p+1}{2}}$ mod $p$?
13363
Why does an argument similiar to 0.999...=1 show 999...=-1?
100896
What is the sum of this? $ 1 + \frac12 + \frac13 + \frac14 + \frac16 + \frac18 + \frac19 + \frac1{12} +\cdots$
91044
Why is a number that is divisible by $2$ and $3$, also divisible by $6$?
127537
Is there any mathematical or physical situations that $1+2+3+\ldots\infty=-\frac{1}{12}$ shows itself?
137808
$n^2 + 3n +5$ is not divisible by $121$
73570
Sum of (example: 0+1+2+3 = 6 , 0+1+2+3+4+5+6+7 = 28 and so on)
6721
math fallacy problem: $-1= (-1)^3 = (-1)^{6/2} = \sqrt{(-1)^6}= 1$?
151085
Simplify the sum $ \sum_{i=0}^{k}(-1)^i i \binom{n}{i} \binom{n}{k-i}$
144765
Solving $\sqrt{x+5} = x - 1$
22505
Evaluate : $1+\frac{2}{6}+\frac{2\cdot 5}{6\cdot 12}+\frac{2\cdot 5\cdot 8}{6\cdot12\cdot 18}+\ldots$
142401
Where's the problem in this equation? Resulting in $4 = 5$
97952
Square root of 1 is (not) -1
47783
why $1+\frac{1}{1+\frac{1}{\frac{1}{1+\dots}}}$ cannot be equal to $\frac{1-\sqrt{5}}{2}$