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Logic Puzzles and Brain Teasers

Hard Math and Logic

Payoff 2n (St. Petersburg). Charge to play?

Medium Math and Logic

Rule: Circle=Yellow. Cards: C, S, Y, R. Check?

Hard Math and Logic

Probability to be the last to try pitcher?

Hard Math and Logic

Surprise test impossible logic?

Hard Math and Logic

Sphere or Torus using rocks?

Easy Math and Logic

9 correct predictions in a row. Psychic?

Easy Math and Logic

Describe a chicken in computer programming.

Hard Math and Logic

Hourglass weigh more falling or at rest?

Medium Math and Logic

Pays payout in Yen. Charge to play?

Easy Math and Logic

5 black spins. Is red "due"?

Medium Math and Logic

10 pennies in 3 cups, each has odd number.

Medium Math and Logic

Spoon tea into coffee, mix, spoon back. More what?

Medium Math and Logic

Max slices from 4 straight cuts?

Medium Math and Logic

Ways to arrange 8 books on a shelf?

Hard Math and Logic

1 poisoned bottle in 1000. Prisoners needed?

Hard Math and Logic

P1 (4 of kind), P2 (3 of kind). Worst possible hand?

Hard Math and Logic

Break stick at 2 random points. Triangle prob?

Medium Math and Logic

Monkey climbs rope with matching weight. Weight?

Medium Math and Logic

Reverses left/right but not up/down?

Hard Math and Logic

Camel 3000 bananas, 1k km. Max reach?

Medium Math and Logic

Get fair toss from biased coin.

Hard Math and Logic

Spheres with 6cm holes. Which has more volume?

Medium Math and Logic

200 fish, 99% Gold. Remove how many for 98%?

Medium Math and Logic

Brothers Chris (FL) and Connor (OR) same time. How?

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