Consider the set {1,11,111, …, ((10^2007) – 1)/9}.

Bridge Over Troubled Students comments.

Chess Problem.

C is for Cookie comments.

Die Another Riddle.

Don’t hold your horses — race them!

FRUITful problem.

Fun With Geometry I.

General code.

Give Me a Hand        (alternate comments)

Gonna Make Your Brown Eyes Blue.

Hats Off.

How can you guess that?

I’ll cross that moat.

Is this seat taken?

Legal 21 comments.

Slices of Pie.

Sum things are the Product of twisted minds.

Three digit palindromes.

Three hats and a strange probability.

What’s my card?