add result for question 1
formatting stuff
add result for question 2
fix error
add result for question 3
add result for question 3
add result for question 4
add hint
add result for question 5
formatting
formatting
add result for question 5
add result for question 6
add result for question 6
add result for question 6
add result for question 7
add result for question 9
add result for question 10
add result for question 12-14
add result for question 12