A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

Replace the question mark with the correct number in below Picture:

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

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.

Be active and find the killer in the picture Riddle below.

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

Which is the smallest number that you can write using all the vowels exactly once?

Which tank will fill first?

What is harder to catch the faster you run?