In the image below, can you find the value of an angle(y)

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

I start and end with 500 and carry a 5 in my heart. But I require the first letter and the first number to be complete. I am the name of a King.

Who am I ?

You are playing as white and given four rooks to checkmate the black king in four moves with the following rules 1. You can place one rook every move and ensure the black king should be in check position.2. After four moves the black king should be in the checkmate position.

Replace the question mark in the picture below.

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

If it took eight men ten hours to build a wall, how long would it take four men to build it?

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

What word begins and ends with an E, but has only one letter?