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

Kohli and Dhoni decided to have a paintball match.
Kohli told Dhoni, "Sir it is not right as you got thrice the paintballs I have".

Dhoni instantly gives Kohli 10 hit paintballs.
Kohli replied, "Sir, I believe you still have twice the paintballs than I have".

Dhoni gives "?" more paintballs to Kohli.
Kohli replied, "Sir it is even now, Let us have a match".

What is "?".

There is a barrel with no lid and some wine in it. 'This barrel of wine is more than half full,' said Curly. 'No it's not,' says Mo. 'It's less than half full.' Without any measuring implements and without removing any wine from the barrel, how can they easily determine who is correct?

How can you make a TV, a bed, a dog, and a car liquid?

Who can jump higher than a Mountain?

Count the number of balls in picture below:

What four weights can be used to balance from 1 to 30 pounds?

What's a single-digit number with no value?

Replace the question mark with the correct number.

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?