(a) If you spent 10 minutes repeatedly shaking and throwing down a pair of coins, would you expect to see two heads come up at least once?
(b) 11 you spent an hour shaking a handful of 10 coins and throwing them down, would you expect to see all 10 come up heads at least once?
(c) If you stirred a box of 10,000 coins and tossed them repeatedly on the floor all day long, would you expect to see all 10,000 appear as heads at least once?