What goes up but never comes down?

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.

I have 50 feet long of cloth, I need to create 50 handkerchiefs each size of 1 foot. I take one minute to cut a 1-foot handkerchief. So how long will it take to cut 50 handkerchiefs?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

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

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

John has played 50 ODI's and his average is 50. How many runs should he score in his 51st ODI, so that his average score jumps to 51?