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 go up and I go down.
I go up towards the beautiful sky and down toward the green ground.
I am present tense.
I am past tense too
Children love me.

Who Am I?

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

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

How many times can you subtract the number 5 from 25?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

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

Sharpest vision can find the lamp in the desert. Are you one of them? Test your observation skills now!

Count The number of F's in the paragraph below:

"FINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS"

There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

How many minimum links will you have to cut to make the big chain?