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.

Before Mount Everest was discovered, what was the highest mountain in the world?

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

Explain?

Seven Robbers robbed a bank and hide the coins in a lonely place.
They decide to divide the money equally the next morning. Two greedy robbers decided to cheat the others and reach the place at night. They equally divided the coins between them, one coin left. So they called another robber and then they decided to divide equally among the three. Sadly again one coin left. The same thing happened to the 4th 5th and the 6th robber.
However, when the 7th robber reached in the morning, they can divide the coins equally.

How many coins were there in total?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

What jumps when it walks and sits when it stands?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

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