In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

How many letters are in the alphabet?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

John was piloting a plane behind a car but was never able to overtake it. Why?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

Can you write down eight eights so that they add up to one thousand?

What jumps when it walks and sits when it stands?

The more you take me, the more you leave me behind.
Who Am I?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?