Challenge question #14 (06/06/2016)
The $8$th of February, $2016$ was a special date, because if written in the usual form $8$/$2$/$16$, then the
‘day’ $\times$ ‘month’ $=$ ‘year’ that is, $8\times2=16$.
How many such dates occur in each century?
A convex polyhedron is a convex solid with plane polygons as its faces.
Is it possible for a convex polyhedron to have $7$ edges?