$0.101001000100001000001$... is irrational.
64216
Is $0.1010010001000010000010000001 \ldots$ transcendental?
149942
Convert a decimal number to a fraction / rational number
125267
Prove that $2^{1/2}$ is irrational
41767
Sequence of rational numbers converging to an arbitrary irrational number $\beta$.
50555
Approximation of real number to the power of irrational
37642
Why is $\pi$ irrational if it is represented as $C/D$?
65895
Irrationality proofs not by contradiction
143733
Is this proof that $\sqrt 2$ is irrational correct?
22762
How can adding an infinite number of rationals yield an irrational number?
9156
Can someone explain this: 0.2 + 0.1 = 0.30000000000000004?
134264
How to get exact Rationalize of a decimal number?
65300
Why is $\pi$ irrational?
92226
Prove $\sqrt6$ is irrational
118374
Is there a proof that $\pi$ is an irrational number?
21237
$\sqrt{6}-\sqrt{2}-\sqrt{3}$ is irrational
56464
Proving the irrationality of $e^n$
122916
Does $[0.9999....]=1$?