Logic Riddles

Answer: They just have to flip it twice. They call the first toss either heads or tails, then the next toss they automatically pick the opposite (ie if one man calls heads on the first flip, he automatically picks tails on the second and vice versa). If they both win one toss (a tie) out of the two, they just have to repeat until one of them wins both tosses.

Answer: Just four. His wife has two feet, he has two feet, each chicken has two claws, each horse has four hoofs.

Answer: Infinity (A sixth, seventh and third all go on forever in decimal form. Pi instead of pie).

Answer: 45 years old.

There is no year 0 so you can add 23 to 23 but you must subtract one to take year 0 out of consideration: 23 + 23 - 1 = 45 years old. In some cultures people are born 1 years old, in this case they would be 46 years old when they die.

Answer: It is neither, the sentence forms a paradox. If it is true than it must be false and vice versa.