I am a prime number.
The double of myself is equal to the square of me.

which number am I?

What does this rebus mean?

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TIME

At a party, there are five people and a whole round cake lying at the centre of the table. Only four people will make a cut and take their piece and the last one will get the remaining piece on the table. How can they make sure that everyone gets a 1/5th of the piece?

Four cars come to a four-way stop, each coming from a different direction. They can’t decide who got there first, so they all go forward at the same time. All 4 cars go, but none crash into each other. How is this possible?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

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

What is common among 11, 69, and 88?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

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 "?".

Why do you find that most of the buildings are deprived of the 13th floor?