Does the reverse of a number equal the reverse of the reverse of the reverse?
119932
Generalizing $\,r(n^2) = r(n)^2,\,$ for $\,r(n) := $ reverse the digits of $n$
75387
A proof that $1=2$. May I know why it’s false?
98294
Can decimal numbers be considered "even" or "odd"?
97191
Reversed numbers with bidi and mathspec
139505
Peano/Presburger axioms - "find" numbers lower or equal than another number
55373
The difference between 0. and 0
5241
Best way to reverse a string
85072
A "reverse" diagonal argument?
21254
Formal language: Proving the reverse operation on a word through induction
90952
Does every number not ending with zero have a multiple without zero digits at all?
80004
Why is $1/i$ equal to $-i$?
41645
Checking my understanding: $1 - 1 + 1 - 1 + 1 - ... = \frac{1}{2}$
119299
Getting inverse of a transposition key
57623
Does a +1/+1 counter remove a -1/-1 counter?
94553
Reverse a string without using reversed() or [::-1]?
41706
How do I reverse an int array in Java?
153302
$9$ divides $n-r(n)$ where $r(n)$ is $n$ with its digits reversed