Show your intermediate work on each of the following.

1. What base-10 number does the eight-bit two's-complement bit pattern 01010101 represent?
2. What base-10 number does the eight-bit two's-complement bit pattern 10101010 represent?
3. Convert 26₍₁₀₎ to an eight-bit two's-complement representation.
4. Convert −104₍₁₀₎ to an eight-bit two's-complement representation.

Perform each of the following conversions.

a.	100101(2) to decimal
b.	53(10) to binary
c.	the eight-bit two's-complement pattern 11100110 to decimal
d.	the number −23(10) to an eight-bit two's-complement pattern

Convert the below to an equivalent if statement where not doesn't appear.

if not (a == b or a.getX() > b.getX()):

What is displayed when the below program is executed?

def run():
    a = 3
    x = 4
    weird(a)
    weird(a)
    print x

def weird(y):
    x = y * 2
    y = x + 5
    print y

run()

What is displayed when the below program is executed?

def run():
    x = 3
    y = weird(x)
    print x, y

def weird(z):
    print z
    z = z * z
    print z
    return z + 1

run()

What is displayed when the below program is executed?

def run():
    a = 3
    print f(a)
    print a

def f(x):
    print g(x)
    a = x + 5
    print g(a)
    return a

def g(y):
    y = y * 2
    print y
    return y + 1

run()

What is displayed when the below program is executed?

def run():
    a = [10]
    b = [40]
    add_lists(a, b)
    print a[0], b[0]

def add_lists(x, y):
    x = [x[0] + 20]
    y[0] = x[0] + y[0]

run()

Complete the f function below so the below program, when executed, displays 4.0 7.0. (Do not modify anything except the body of f. There are many possible answers.)

def run():
    a = 16.0
    b = 49.0
    print f(a), f(b)

def f(x):


run()

Complete the below function so that given a list of integers, it returns the number of them that are even.

def count_evens(numbers):

11
11
4

3
9
3 10

6
7
16
17
8
3

10 70