Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

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.

Two fathers and two sons decided to go to a shop and buy some sweets upon reaching. Each of them bought 1 kg of sweet. All of them returned home after some time and found out that they had 3kg of sweets with them.

They did not eat the sweets in the way, nor threw or lose anything. Then, how can this be possible?

What number divided by 4 is the same as that number minus 4?

A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396.

What is the sum of the three digits?

There was a man he lives in a hotel each morning he presses the first floor button each evening if there is a person in the elevator he asks him to press the 10 floor button if there is no one in the elevator he takes the stairs why.

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?