How many integer nonnegative solutions are there to the pair of equations: $ x_1 + x_2 + x_3...+ x_6 = 20 $ and $ x_1 + x_2 + x_3 = 7$.
105347
How many nonnegative integer solutions are there to the pair of equations $x_1+x_2+…+x_6=20$ and $x_1+x_2+x_3=7$?
94105
Find the all positive integer solutions $(a,b)$ to $\frac{a^3+b^3}{ab+4}=2020$.
109706
Fast way to come up with solutions to $x(x-1)(x-2)(x-3)=1$?
28274
Prove that $x^2 + y^2 = 3(z^2 + m^2)$ has no solutions in integer
133164
Rational solutions for $x^2+y^2=3$
48502
number of ordered pairs of integers $(x,y)$ satisfying the equation
70662
How many non-negative integer solutions does the equation $3x + y + z = 24$ have?
108941
Combinatorics Question Asking How Many Integer Solutions Given Different Restrictions
21531
The number of nonnegative integer triples with sum equal to $12$
38541
How many solutions are there to $x_1 + x_2 + ... + x_5 = 21$?
95494
Number of solutions of an arithmetic function's equation
103832
Number of solutions of $x_1 + x_2 + x_3 + x_4 = 14$ such that $x_i \le 6$
141093
How many real roots does $(x-a)^3+(x-b)^3+(x-c)^3$ have?
94965
Solve $x\equiv 1\pmod2$, $x\equiv 2\pmod3$, $x\equiv 3\pmod4$, $x\equiv 4\pmod5$, $x\equiv 5\pmod6$ and $x\equiv 0\pmod7$
89590
The number of solutions of $ax^2+by^2\equiv 1\pmod{p}$ is $ p-\left(\frac{-ab}{p}\right)$
106896
Number of solutions of $x_1+2x_2+\cdots+kx_k=n$?
61210
BMO2 1995 Question 1 - Solve the equation for positive integers (a,b,c)