# Tag Info

Questions involving the pigeonhole principle, which states that if $n$ items are placed in $m$ containers and $n>m$, then one at least one container has more than one item.
The pigeonhole principle states that if $n$ items are placed in $m$ containers and $n>m,$ then one at least one container has more than one item.
For example, it can be used to show that for any $5$ points on a sphere, some hemisphere must contain $4$ of the points.