Rearrange the letters in "new door" to make one word.

Can you make the below equation true by using any three numbers from "1, 3, 5, 7, 9, 11, 13 and 15"?

( ) + ( ) + ( ) = 30

I add 5 to 9 and get 2. The answer is correct, so what am I?

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?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

People make me, save me, change me, raise me. What am I?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

What am I?