Are these the only solutions to $a!b!=c!$?
40343
Solutions of $p!q! = r!$
117352
Show $x^n+ax+b=0$ has most two solutions
53660
Show that $ a，b，c, \sqrt{a}+ \sqrt{b}+\sqrt{c} \in\mathbb Q  \implies  \sqrt{a},\sqrt{b},\sqrt{c} \in\mathbb Q $
21726
Show that if $(b,c)=1$, then $(a,bc)=(a,b)(a,c)$.
66563
Is $ (A∪B)×(C∩D)=(A∪C)×(B∪D)$ true for all sets A,B,C and D?
114185
Existence of $x$ such that $2^x =a,3^x=b,5^x=c$ for some integers $a,b,c$
4885
Polynomials with integer coefficients such that $p(a)=b,p(b)=c,p(c)=a$
125164
How to prove the existence of $b$ in $Q$ such that $a<b^2<c$ in $Q$?
7085
Prove that if the equation $x^{2} \equiv a\pmod{pq}$ has any solutions, then it has four solutions.
21241
Proving $\,a\mid bc\!\iff\! \frac{a}{(a,b)}\!\mid c\ $ [general Euclid's Lemma]
8920
There exists $C\neq0$ with $CA=BC$ iff $A$ and $B$ have a common eigenvalue
58589
On the factorial equations $A! B! =C!$ and $A!B!C! = D!$
24837
$x^2+1=0$ uncountable many solutions
124320
$a,b,c>0 \text{ s.t. }a+b+c=1 \implies \sqrt{ab+c}+\sqrt{bc+a}+\sqrt{ca+b} \ge 1+ \sqrt{ab}+\sqrt{bc}+\sqrt{ca}$
80982
Solve $a^3+b^3+3ab=1$ with $(a,b)\in \Bbb{Z}^2$
84422
$AB=BA$, $AC=CA$ we need to show $BC=CB$
23835
Discrete mathematics - Find all integer solutions of the equation $a^2+ b^2 + c^2=a^2 b^2$.