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Prisoners and Coins (in Logic) Rating: 3.00
Posted on 2021-04-14 by tomarken (No Solution Yet, 4 Comments)

Three Coin Consideration (in Logic) Rating: 5.00
Posted on 2023-03-03 by K Sengupta (Solution Posted, 5 Comments)

Coin Quantity Query (in Logic) Rating: 3.67
Posted on 2023-04-20 by K Sengupta (Solution Posted, 8 Comments)

Simple coins (in Probability) Rating: 3.88
Posted on 2002-04-09 by art (Solution Posted, 45 Comments)

2,000,000 Coin Tosses (in Probability) Rating: 3.00
Posted on 2003-03-03 by Charlie (Solution Posted, 10 Comments)

Flipping a coin (in Probability) Rating: 2.76
Posted on 2003-05-20 by Tim Axoy (Solution Posted, 23 Comments)

Coin tossing (in Probability) Rating: 3.67
Posted on 2004-06-11 by Federico Kereki (Solution Posted, 26 Comments)

A Coin Game (in Probability) Rating: 3.50
Posted on 2004-05-20 by Brian Smith (Solution Posted, 12 Comments)

Chessboard Coin (in Probability) Rating: 2.83
Posted on 2004-10-08 by SilverKnight (Solution Posted, 21 Comments)

Flipping Coins (in Probability) Rating: 3.71
Posted on 2004-10-13 by Brian Smith (Solution Posted, 26 Comments)

Multicolored Coins (in Probability) Rating: 3.33
Posted on 2006-05-24 by tomarken (Solution Posted, 10 Comments)

Six hundred coins (in Probability) Rating: 4.50
Posted on 2006-12-22 by Tristan (Solution Posted, 13 Comments)

A game of coins (in Probability)
Posted on 2010-11-09 by Vishal Gupta (No Solution Yet, 4 Comments)

An enchanted coin (in Probability)
Posted on 2014-06-24 by Ady TZIDON (No Solution Yet, 3 Comments)

A Coin Game II (in Probability)
Posted on 2012-10-09 by K Sengupta (No Solution Yet, 1 Comments)

Three coins (in Probability) Rating: 2.00
Posted on 2015-08-20 by Ady TZIDON (Solution Posted, 10 Comments)

2 coins (in Probability)
Posted on 2016-03-18 by Ady TZIDON (No Solution Yet, 8 Comments)

Coin Flip Conundrum (in Probability)
Posted on 2024-11-12 by Danish Ahmed Khan (No Solution Yet, 2 Comments)

Coin through a hole (in Shapes) Rating: 3.00
Posted on 2006-05-29 by Jer (Solution Posted, 24 Comments)

Four Coin Theorem (in Shapes)
Posted on 2013-03-17 by Danish Ahmed Khan (No Solution Yet, 2 Comments)

Coin And Bottle (in General) Rating: 2.55
Posted on 2003-07-16 by Ravi Raja (Solution Posted, 14 Comments)

Jumping Coins (in General) Rating: 3.00
Posted on 2004-10-18 by Brian Smith (Solution Posted, 9 Comments)

Coincidental Days (in General)
Posted on 2012-02-16 by K Sengupta (Solution Posted, 2 Comments)

Sliding Coin puzzle (in General) Rating: 3.50
Posted on 2013-06-19 by Danish Ahmed Khan (No Solution Yet, 3 Comments)

2001 Coin Crossed 1-2-3 Value Conclusion (in General) Rating: 3.00
Posted on 2023-05-07 by K Sengupta (Solution Posted, 3 Comments)

Coin Collection (in Numbers) Rating: 4.20
Posted on 2004-05-04 by Gamer (Solution Posted, 12 Comments)

A few coins (in Numbers) Rating: 2.92
Posted on 2004-11-19 by e.g. (Solution Posted, 14 Comments)

A Few Coins II (in Numbers) Rating: 1.80
Posted on 2005-05-12 by Dustin (Solution Posted, 6 Comments)

Coin flips (in Numbers) Rating: 4.00
Posted on 2014-01-10 by Ady TZIDON (Solution Posted, 1 Comments)

Coin Collection Conclusion (in Numbers) Rating: 5.00
Posted on 2023-05-01 by K Sengupta (Solution Posted, 1 Comments)

Coins on the round table (in Games) Rating: 3.77
Posted on 2002-09-08 by levik (Solution Posted, 13 Comments)

Coin Toss (in Games)
Posted on 2013-06-13 by brianjn (Solution Posted, 4 Comments)

Coin contest (in Games) Rating: 5.00
Posted on 2015-11-27 by Ady TZIDON (No Solution Yet, 5 Comments)

Detect my chosen coin (in Games)
Posted on 2016-01-19 by Ady TZIDON (No Solution Yet, 19 Comments)

The odd coin (in Weights and Scales) Rating: 3.17
Posted on 2002-05-01 by theBal (Solution Posted, 40 Comments)

Many coins - one fake (in Weights and Scales) Rating: 3.71
Posted on 2003-05-14 by Jonathan Waltz (Solution Posted, 20 Comments)

39 coins (in Weights and Scales) Rating: 4.13
Posted on 2003-04-23 by Jonathan Waltz (Solution Posted, 10 Comments)

A Bag of Fake Coins (in Weights and Scales) Rating: 4.21
Posted on 2003-07-25 by Brian Smith (Solution Posted, 16 Comments)

Yet one more coin sorting problem (in Weights and Scales) Rating: 4.00
Posted on 2004-05-31 by Federico Kereki (Solution Posted, 20 Comments)

Sorting Coins (in Weights and Scales) Rating: 3.33
Posted on 2004-01-18 by Brian Smith (Solution Posted, 11 Comments)

Classic counterfeit coin problem (in Weights and Scales) Rating: 3.75
Posted on 2005-06-04 by McWorter (Solution Posted, 13 Comments)

Two false coins (in Weights and Scales)
Posted on 2005-03-25 by Federico Kereki (Solution Posted, 11 Comments)

Twelve Coins and a Broken Scale (in Weights and Scales) Rating: 3.67
Posted on 2005-06-24 by Brian Smith (Solution Posted, 9 Comments)

One or Two Fake Coins (in Weights and Scales) Rating: 3.67
Posted on 2005-09-13 by Brian Smith (No Solution Yet, 4 Comments)

Two sets of Coins (in Weights and Scales) Rating: 3.50
Posted on 2005-10-07 by Brian Smith (Solution Posted, 7 Comments)

Radioactive Coins (in Weights and Scales) Rating: 4.50
Posted on 2006-10-17 by David Shin (No Solution Yet, 20 Comments)

Weighing Coins (in Weights and Scales) Rating: 5.00
Posted on 2007-02-21 by Dennis (Solution Posted, 6 Comments)

Four Coins and Three Weighings (in Weights and Scales) Rating: 4.33
Posted on 2007-03-08 by Brian Smith (Solution Posted, 10 Comments)

True coins, fake coins (in Weights and Scales) Rating: 5.00
Posted on 2008-10-23 by pcbouhid (Solution Posted, 9 Comments)

Sorting Coins II (in Weights and Scales) Rating: 5.00
Posted on 2012-03-28 by K Sengupta (Solution Posted, 4 Comments)

Ninety nine coins plus one catch (in Weights and Scales)
Posted on 2014-06-01 by Ady TZIDON (No Solution Yet, 7 Comments)

4 labeled coins (in Weights and Scales) Rating: 3.00
Posted on 2016-02-16 by Ady TZIDON (No Solution Yet, 1 Comments)

Two Light Coins (in Weights and Scales)
Posted on 2015-12-09 by Brian Smith (Solution Posted, 1 Comments)

6 coins (in Weights and Scales) Rating: 4.25
Posted on 2016-01-13 by Ady TZIDON (Solution Posted, 10 Comments)

9 coins prob (in Weights and Scales) Rating: 3.00
Posted on 2016-01-18 by Ady TZIDON (No Solution Yet, 6 Comments)

Restricted Five Coin Sort (in Weights and Scales)
Posted on 2016-07-14 by Brian Smith (Solution Posted, 1 Comments)

Counterfeit Coins Conclusion (in Weights and Scales) Rating: 5.00
Posted on 2022-02-28 by K Sengupta (No Solution Yet, 0 Comments)

Sorting Coins III (in Weights and Scales) Rating: 4.00
Posted on 2022-10-26 by K Sengupta (No Solution Yet, 4 Comments)

Multistory Demise Crossed Coin Toss Muse (in Riddles) Rating: 5.00
Posted on 2023-09-15 by K Sengupta (Solution Posted, 3 Comments)

Biased Coins (in Just Math) Rating: 4.00
Posted on 2005-02-17 by David Shin (Solution Posted, 9 Comments)

Quite a coincidence (in Just Math) Rating: 3.00
Posted on 2018-01-19 by Ady TZIDON (No Solution Yet, 6 Comments)

Coin fitting (in Just Math)
Posted on 2025-04-23 by Danish Ahmed Khan (No Solution Yet, 5 Comments)

Coincide or Perpendicular (in Geometry) Rating: 3.00
Posted on 2012-10-20 by Bractals (Solution Posted, 0 Comments)

Reflection coincides with the center (in Geometry) Rating: 3.50
Posted on 2019-12-06 by Danish Ahmed Khan (No Solution Yet, 26 Comments)

Intuitive Coins (in Algorithms) Rating: 3.80
Posted on 2005-03-29 by Federico Kereki (Solution Posted, 14 Comments)

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