Two trains start at the same time, one from Bangalore to Mysore and the other from Mysore to Bangalore. if they arrive at their destinations one hour and four hours respectively after passing one another, how much faster is one train running than the other?

What animal walks on four legs in the morning, two legs during the day, and three legs in the evening?

Oedipus, the king of Thebes, figured out the answer to the riddle:

Do you know who was buried in John's tomb?

There was a strange boy who was born before his father. How can this be possible?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member ?

How many times in a given day, minutes and hour clock comes in a straight line ?

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

Cristina was born in 1888. She just had her 30th birthday today how did that happen?