Hints:
1. Click on the case and drag the mouse to rotate it. Find a yellow post-it note
2. Fibonacci sequence
3. 
    X: Opposite sided on a dice add to 7
    Y: Multiply the first two numbers on each row to get the third
    Z: Poster with Z
4.
    X: Find the four countries that are marked. The first letter in each of the countries make a number.
    Y: Take the first number and add 7 to get the next, subtract 3 to get the third
    Z: Look at the short hand on the clock on the wall