Answer:
How many bananas can you eat if your stomach is empty?
10 fish are in a tank. 2 Drown, 4 Swim away, and 3 Die. How many are left?
What goes up the hill and down the hill, And spite of all, yet stand still?
What always comes into a house through the keyhole?
If you have 30 white socks, 22 black socks, and 14 blue socks scattered across the floor in the dark, how many would you have to grab to get a matching pair?
I appear in the morning. But am always there. You can never see me. Though I am everywhere. By night I am gone, though I sometimes never was. Nothing can defeat me. But I am easily gone.