Question: A certain large animal lives happily and thrives here on Earth. One day, every single one of these critters is wiped out by a mysterious disease which affects only this particular animal.
There are none left anywhere on earth -- they are all gone. About a year or so later, they begin to reappear on Earth again. How can this be?
Answer: The animal is the Mule. Since all Mules are born sterile, you can only get a Mule by crossing a donkey with a horse. That is how the species is able to repopulate itself.
Question: Two mothers and two daughters go shopping. They have $21, which they split equally between them. How can this be possible?
Answer: There are only three people. One of the mothers is a daughter also, because there is a grandmother, a mother and a daughter! They each get $7 exactly.
Question: There is a common English word that is nine letters long. Each time you remove a letter from it, it still remains an English word - from nine letters right down to a single letter. What is the original word, and what are the words that it becomes after removing one letter at a time?
Question: Sally is traveling by ship from south of the equator to the north.
She has a nice little cabin with a bathroom, but no window.
Sally has no compass nor other instruments. Just the
general luggage one brings on board a long cruise. Yet, without
leaving her room or talking with anyone, Sally will be able to
tell when the ship has crossed the equator. How?
Answer: Sally can fill the sink and watch it drain. When the water reverses direction when going down the drain, she will know they have crossed the equator.