Challenging Math Problems (Dover Math Games & Puzzles)

Paradoxes in Mathematics (Dover Math Games & Puzzles)

Challenging Math Problems (Dover Math Games & Puzzles)

Lewis Carroll's Games and Puzzles (Dover Recreational Math) - VERY GOOD

Challenging Math Problems by Terry Stickels: Used

Lewis Carroll's Games and Puzzles (Dover Math Games & Puzzles)

Challenging Math Problems by Stickels, Terry