# Math

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

# Math

Dean Sam and Castiel are three brothers. Interestingly their current age is prime. What's more interesting that difference between their ages is also prime. How old are they?

# Math

Joe has ten coins totaling $1.19. From these coins, he cannot make exact change for a dollar, half-dollar, quarter, dime, or nickel. What are the coins?

# Math

Add me to myself and multiply by 4. Divide me by 8 and you will have me once more. What number am I?