Dictionaries - General Questions

What is the output of the following code?

d = {'a': 1, 'b': 2}
for k, v in d.items():
    print(k * v, end=' ')

What is the output of the following code?

d = {'b': 1, 'a': 2}
print(list(d))

What is the output of the following code?

d = {'x': 10}
d.setdefault('x', 99)
d.setdefault('y', 5)
print(d)

What is the output of the following code?

d = dict(zip(['a', 'b'], [1, 2]))
print(d)

What is the output of the following code?

d1 = {'a': 1}
d2 = {'b': 2, 'a': 9}
d1.update(d2)
print(d1)