Volume of an n-simplex
22573
Volume of $T_n=\{x_i\ge0:x_1+\cdots+x_n\le1\}$
15586
Volume of the torus with an integral
152342
$x_1+x_2+\cdots+x_n\leq M$: Cardinality of Solution Set is $C(M+n, n)$
57644
Lower bounds for ${{2n} \choose {n}}$
86635
Optimizing $(X_{n}+c)^{2}$ to show that $P(\overline{X}_{n}\geq \lambda) \leq E(X_{n}^{2})/(EX_{n}^{2}+ \lambda^{2})$
118007
Not lifting your pen on the $n\times n$ grid
132085
Minkowski sum and product of 2D-regions
143634
Projecting a Non Negative Vector onto the Simplex
155004
Maximal points on an $n$-dimensional ellipsoid
146254
A problem on Minima. Proving sphere has minimum surface area for a given volume
123985
Simplex Random Walk
88283
Proving the length of angle bisector
104274
Express $C$ interms of the sets $A_n$
134081
What is the Cartesian product of $n$ polygons?
27263
How many ways can $b$ balls be distributed in $c$ containers with no more than $n$ balls in any given container?
32350
Compilation of proofs for the summation of natural squares and cubes
111954
Computing the cardinality of a combinatorial set