It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

A woman lives in a Tall building thirty-six floors high and served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

What can go up a chimney down, but can’t go down a chimney up?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

I am a three digit number.
My tens digit is five more than my ones digit.
My hundreds digit is eight less than my tens digit.
What number am I?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

A professor thinks of two consecutive numbers between 1 and 10.
'A' knows the 1st number and 'B' knows the second number

A: I do not know your number.
B: Nor do I know your number.
A: Now I know.

What are the four solutions for this?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

If an electric train is travelling south, then which way is the smoke going?