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 A^2 = B^3 + C^3
 Set {4,b,c,d,e} such that the product of any two of them increased by 1 is a square
 smallest integer whose first n multiples all contain a 3
 Set {3,b,c,d,e} such that the product of any two of them increased by 1 is a square
 Set {2,b,c,d,e} such that the product of any two of them increased by 1 is a square
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Category Archives: Logic Puzzles
Two Logic Puzzles
(1) 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 … Continue reading
My collection of #Mensa puzzles
(1) If James purchased: sweater, encyclopedia, mug, aftershave, and a jacket. Who purchased: notebook, anorak, socks, underwear, and sandles? (2) What number should replace the question mark? (3) The … Continue reading
Logic puzzle #Mensa  Card puzzle
Puzzle: Each card has a letter (consonant or vowel) on one side, and a number (odd or even) on the other side. Rule: If there’s a vowel on one side of the card, there’s always an odd number on the … Continue reading
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/curryparadox/ Russell’s paradox http://en.wikipedia.org/wiki/Russell’s_paradox http://plato.stanford.edu/entries/russellparadox/ 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, Mensalike 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, Mensalike 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