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rogerl

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58
There exists a power of 2 such that the last five digits are all 3's or 6's. Find the last 5 digits of this number
math.stackexchange.com

29
Does any given integer only occur in one primitive Pythagorean triple?
math.stackexchange.com

27
What evidence is there that Fermat had a proof for his Last Theorem?
hsm.stackexchange.com

19
What's the difference between a bijection and an isomorphism?
math.stackexchange.com

19
Why is every positive integer the sum of 3 triangular numbers?
math.stackexchange.com

16
Is there a way to make the tick marks larger?
mathematica.stackexchange.com

14
$ \tan 1^\circ \cdot \tan 2^\circ \cdot \tan 3^\circ \cdots \tan 89^\circ$
math.stackexchange.com

13
A differentiation question conceptual query
math.stackexchange.com

12
If $p$ is prime, $p\ne3$ then $p^2+2$ is composite
math.stackexchange.com

12
Counterexamples to proofs of correct statements
math.stackexchange.com

12
How to draw the graph of this function? (very difficult)
math.stackexchange.com

12
Generating functions and central binomial coefficient
math.stackexchange.com

11
Probability that a number is divisible by 11
math.stackexchange.com

11
How do I prove that $x^p-x+a$ is irreducible in a field with $p$ elements when $a\neq 0$?
math.stackexchange.com

11
Show that the equation $x^{4} + rx + s = 0$ has at most two distinct real roots.
math.stackexchange.com

10
How To solve This Perfect Square Word Problem
math.stackexchange.com

10
Unusual result to the addition
math.stackexchange.com

10
How to prove $2\sin^2(80^\circ) - \sin(70^\circ)=1$?
math.stackexchange.com

9
Find a generator of the multiplicative group of $\mathbb{Z}/23\mathbb{Z}$ as a cyclic group
math.stackexchange.com

9
Totient Function $\varphi{(x)}=24$
math.stackexchange.com

9
Methods for determining which roots of a polynomial are inside of the unit circle?
math.stackexchange.com

8
How to find all Pythagorean triples containing a given number?
math.stackexchange.com

8
What is the best way to solve an equation of the form $(f(x))^2-a(f(x))+b=x$?
math.stackexchange.com

8
Unconventional mathematics books
math.stackexchange.com

8
Proving $x^{2}+1 \neq n! $,using Gaussian Integer.
math.stackexchange.com

8
Prove that there is no number that divides both n and n+1
math.stackexchange.com

8
Polar form of a complex number
math.stackexchange.com

7
Proving Any connected subset of R is an Interval
math.stackexchange.com

7
Simplify the following complex fraction:
math.stackexchange.com

7
Diagonalisation argument for real numbers
math.stackexchange.com

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