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Category Archives: Logic Puzzles
Daisy Petals Game
Daisy Petals Description In this game there will be a daisy with 20 petals. You and the computer will take turn to pick petals from the daisy, the one who picks the last petal wins. Each time you can choose … Continue reading
What specific amount is a couple/ a few/ many/ several or numerous?
Question: What specific amount do you think of when saying …. …. a couple? …. a few? …. quite? …. a bit? …. bit by bit? …. quite a bit? …. quite a few? …. many? …. a lot? … Continue reading
#Logic Puzzle: Is Santa Claus Real?
Concepts used : Curry’s paradox is named after the logician Haskell Curry. http://en.wikipedia.org/wiki/Curry’s_paradox http://plato.stanford.edu/entries/curry-paradox/ Russell’s paradox http://en.wikipedia.org/wiki/Russell’s_paradox http://plato.stanford.edu/entries/russell-paradox/ Modus ponens http://en.wikipedia.org/wiki/Modus_ponens Fallacious Proof: Let c be the set {x : if x ∈ x, then Santa Claus … Continue reading
Brain Teasers – Part Two
Here’s my collection of Mensa, Mensa-like and IQ questions. Have fun! #1 What is the next number in the series? What is X? 4, 6, 12, 18, 30, 42, 60, X #2 Draw a clock … Continue reading
Brain Teasers – Part One
Here’s my collection of Mensa, Mensa-like and IQ questions. Have fun! #1 In British Columbia you cannot take a picture of a man with a wooden leg. Why not? #2 Which is correct to say, “The … Continue reading
Godel’s Mathematical Proof of God’s Existence
Kurt Gödel http://plato.stanford.edu/entries/goedel/ One page proof of God’s existence. “Reflections on Kurt Gödel” by Hao Wang, MIT Press This is an exercise in Modal logic. What do you make of such proof? Can you show the weakness of … Continue reading
Choose either 2 or 3
Multiply your chosen number by any odd number and multiply the number you did not choose by any even number. Add those two products together. From that result, how can I determine which number was chosen?
Logic Puzzle : Which offer is better?
Two people, A and B, each make an offer (see below). The problem is to determine which offer is better. Person A offers: You are to make a statement. If the statement is true, you get exactly $10. If the … Continue reading
Solutions to Logic February Puzzles [Part 1]
Solutions to Logic puzzles I posted on February 7, 2012: My collection of Logic Puzzles The puzzles: 1. First Variant: I offer two prizes – Prize 1 and Prize 2. If you make a true statement, I will give you … Continue reading
Fun Logic Puzzle #1
Knowledge of Mathematical Logic is NOT required for solving the following puzzle: Five aliens, each from different planets, were all, coincidently, testing prototypes of UFO; they were all seen by different people from the Earth. Which alien tested which UFO, … Continue reading
