What is the coolest letter in the alphabet?

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.

A man was just doing his job when his suit was torn. Why did he die three minutes later?

Which is the rope you never skip with?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

Solve the mathematical equation in the picture below.

A boy was locked in a room by some robbers. All that is in the room is a piano, a calendar, and a bed. The room is locked from the outside. What does he eat, drink, and how does he escape and get out?

Solve the following series:
AZ, GT, MN, __, YB

What is next number in the pattern below:

131 517 192 123 ?

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?