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Browsing Riddles in Number Theory

C is for Cookie

General Code

PRIMEary Colors

Thanksgiving Challenge (NEW: Posted December 18, 2013)

The Mathematician and the Pea

We Value Your Input (NEW: Posted December 18, 2013)

Year Today, Gone Tomorrow?

You’re Caught–Stop Your Whining

Riddles

  • —Difficulty
    • +Easy
    • +Medium
    • +Hard
    • +Very Challenging
    • +NEW RIDDLES
  • —Topic
    • +Geometry
    • +Combinatorics
    • +General
    • +Algebra
    • +Probability
    • +Games
    • —Number Theory
      • C is for Cookie
      • General Code
      • PRIMEary Colors
      • Thanksgiving Challenge (NEW: Posted December 18, 2013)
      • The Mathematician and the Pea
      • We Value Your Input (NEW: Posted December 18, 2013)
      • Year Today, Gone Tomorrow?
      • You're Caught--Stop Your Whining
    • +Logic
    • +Hat

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