What is the problem with this figure "proving" that $273=272$?
32984
why 64 is equal to 65 here?
50662
Why does this pattern occur: $123456789 \times 8 + 9 = 987654321$
109900
Why is $e^{\pi \sqrt{163}}$ almost an integer?
53123
Trying to derive a contradiction with this simple inequality,
24322
Prove that the equation $18x+42y=22$ has no integer solution?
125512
Doubt regarding divisibility of the expression: $1^{101}+2^{101} \cdot \cdot \cdot +2016^{101}$
22681
Why does Mathematica claim there is no even prime?
81267
A simple doubt in number theory problem.
19628
What is wrong with this fake proof $e^i = 1$?
29692
Proof verification: elementary Number Theory Proof of $am+bn = 1$
158684
How to solve and see resolution of $13^{53} \pmod 7$ using Fermat little Theorem?
13363
Why does an argument similiar to 0.999...=1 show 999...=-1?
24068
Plus-minus sign in the continued fraction
5679
Why is $2\pi i \neq 0?$
110261
Value of $ \cos 52^{\circ} + \cos 68^{\circ} + \cos 172^{\circ} $?
21945
Explanation of the Fibonacci sequence appearing in the result of 1 divided by 89?
31954
Why this proof $0=1$ is wrong?(breakfast joke)