1.
The problem is that only the last if-else statement actually has any effect, which results
in red being chosen 1/4 of the time (when color is 3) and yellow 3/4 of the time
(when color is 1, 2 or 4).  For example, if color is 1, the first if statement is
true and the fill color is set to blue, however, when it get's to the third if (color == 3),
this if false and so the code goes to the else clause and sets the fill color to "yellow".

2. 
You can emulate any for loop with a while loop by introducing a new
variable for counting up the number of iterations.  You initialize it
before the loop, use < to check the number of iterations, and at the
end of the while loop you increment the counter by 1.

def my_sum(n):
    total = 0

    i = 1

    while i < n+1:
        total += i
        i += 1

    return total

3. Given the list definition

my_list = [4, 8, 16, 2, 7, 9]

what would each of the following display (or not that an error would occur):

print(my_list[1])
print(my_list[4])
print(my_list[6])
print(my_list[len(my_list)-1]
print(my_list[-1]
print(my_list[1:5])
print(my_list[-3:-1])

a. 8
b. 7
c. Error
d. 9
e. 9
f. [8, 16, 2, 7]
g. [2, 7]