Re-arrange the red and blue balls in the check board in such a way that no two balls of same color falls in the same row horizontally, vertically or diagonally.
Jim’s teacher asked him his father’s name. He replied that his father’s name has 5 letters in it. His name starts and ends with 500. Additionally, the name has 5 in the middle. The second letter of the name is the first alphabet. And lastly, the name also contains the first number. What is John’s father’s name?