#2. When asked how old he was, Ahmed replied “In two years I will be twice as old as I was five years ago”. How old is he?
#3. The amount of water flowing into a tank doubles every minute. The tank is full in an hour. When was the tank half full?
#4. Which weighs more? A pound of iron or a pound of cotton?
#5. What 5-letter word becomes shorter when you add two letters to it?
#6. What can’t be used unless broken?
#7. What goes up and never comes down?