Puzzles

Celebrating Retirement
Puzzles

Celebrating Retirement

By Josh Feldman
I never was supposed to be an actuary. Instead, once it became clear I wasn’t going to be a pro surfer, it was quietly assumed that I would follow in my dad’s footsteps and be a physicist.

Four Points
Puzzles

Four Points

By Stephen Meskin
This problem concerns the number of ways of putting four distinct points in a (Euclidean) plane. But first, let me put the problem in context.

Tiling 2
Puzzles

Tiling 2

By Stephen Meskin
“Tiling 2”? If you look back at prior issues of Contingencies, you will not find a puzzle column named “Tiling 1.”