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Browsing Riddles in Articles

$100 of Animals

… = 24?

0 and 7

1, 2, 3, …

A Guessing Game

Bananas to Market

Protected: Bridge Over Troubled Students (Teacher’s Corner Version)

Protected: C is for Cookie (Teacher’s Corner Version)

Cards from a Hat

Protected: Chess Problem (Teacher’s Corner Version)

Christmas for Prisoners

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

Converging and Diverging Sequences

Protected: Die Another Riddle

Digits

Frank and His Son

Protected: FRUITful Problem (Teacher’s Corner Version)

Fun with Geometry: I: Student/Teacher Corner

Protected: General Code

Protected: Give me a hand

Protected: Give Me a Hand (Teacher’s Corner Version)

Protected: Gonna Make Your Brown Eyes Blue (Teacher’s Corner Version)

How can you guess that?

How to be a Square?

Protected: I’ll cross that moat

Protected: Legal 21 (Teacher’s Corner Version)

Numbers and Language

On and Off, On and Off

Selling Apples Makes You Rich

String Time

Protected: Sum Things are Products of Twisted Minds

Sum to 1

Thanksgiving Challenge (NEW: Posted December 18, 2013)

The Closer City

The Heavier Coin

Protected: Three digit palindromes

Tiger or Freedom?

To Market, To Market…

To Market, To Market… II

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

What’s Next?

Which Way to the Village?

Riddles

  • —Difficulty
    • +Easy
    • +Medium
    • +Hard
    • +Very Challenging
    • +NEW RIDDLES
  • —Topic
    • +Geometry
    • +Combinatorics
    • +General
    • +Algebra
    • +Probability
    • +Games
    • +Number Theory
    • +Logic
    • +Hat

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