A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

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

which number am I?

What question can you never answer yes to?

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?

What can jump higher than a building?

If eleven plus two equals one, what does nine plus five equal?

Replace the question mark with the correct number.

I am sure no one can have two things for dinner. what are they?

An artist while painting a scenic beauty, decides to paint three layers of blue colour on the sky.

Which layer will go on the first?

Three men in a cafe order a meal the total cost of which is $15. They each contribute $5. The waiter takes the money to the chef who recognises the three as friends and asks the waiter to return $5 to the men.

The waiter is not only poor at mathematics but dishonest and instead of going to the trouble of splitting the $5 between the three he simply gives them $1 each and pockets the remaining $2 for himself.

Now, each of the men effectively paid $4, the total paid is therefore $12. Add the $2 in the waiters pocket and this comes to $14. Where has the other $1 gone from the original $15?