Answer:
There are 20 birds in a tree. A man comes and shoots one of the birds. How many birds are left?
You can see me when two prisons throw light from one side and other side but odd number?
The more that there is of this, the less you see. What is it?
A girl is sitting in a house at night that has no lights on at all. There is no lamp, no candle, nothing. Yet she is reading. How?
What was the longest river in the world before the Amazon River was discovered?
When is it bad luck to see a black cat?