# 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

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## 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

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## 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

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## Brain Teasers | 22 Mensa puzzles

(1) If 2   +   3   =   10 7   +   2   =   63 6   +   5   =   66 8   +   4   =   96 Then, what … Continue reading

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## 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

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## 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

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## #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

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## 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

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## 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

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## 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

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