Python 3 Tutorial - Lessons 92 - Module 6 - Topic 56 Functional Programming - Question 1

Question

What is the answer to the question below from:
Python 3 Tutorial - Lessons 92 - Module 6 - Topic 56 Functional Programming - Question 1

What is the output of this code?
def test(func, arg):
return func(func(arg))

def mult(x):
return x * x

print(test(mult, 2))

Answer 1

2x2=4
return func
4×4=16