Answer:
Three doctors said that Bill was their brother. Bill said he had no brothers. Who was lying?
On which day of the year do fewest people die?
There are two sisters: one gives birth to the other and she, in turn, gives birth to the first. Who are the two sisters?
Is an older one-hundred dollar bill worth more than a newer one?
Feed me anything and I will live.. But feed me with water and I will die...
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.