Q: Which of the following is the correct way to check if a variable 'speed' is within the range 0 to 200 (inclusive) in Python?

$$\text{if speed \u003e= 0 \, \text{and} \, speed \u003c= 200:}$$

Q: A program needs to determine if a user qualifies for a loan. The user must earn at least $30,000 per year and have been employed for at least 2 years. Which Boolean expression correctly represents this requirement?

$$\text{salary \u003e= 30000 \, \text{and} \, years_on_job \u003e= 2}$$

Question 1

Which of the following best describes a decision structure in programming?

Accepted Answer

A program structure that can execute a set of statements under certain conditions.

Question 2

Given the following code, what will be the output if the user enters 25 for 'hours' and 10 for 'pay_rate'?

if hours \u003e 40:
    overtime_hours = hours - 40
    overtime_pay = overtime_hours * pay_rate * 1.5
    gross_pay = 40 * pay_rate + overtime_pay
else:
    gross_pay = hours * pay_rate
print('The gross pay is $', format(gross_pay, ',.2f'), sep='')

Accepted Answer

$$\250.00$

Question 3

Which of the following Boolean expressions will evaluate to True if $$x = 5$$ and $$y = 10$$?

Accepted Answer

$$x \u003c y$$

Question 4

What is the output of the following code?

s1 = 'New York'
s2 = 'Boston'
if s1 \u003e s2:
    print(s2)
    print(s1)
else:
    print(s1)
    print(s2)

Accepted Answer

Boston
New York

Question 5

Which of the following statements about string comparison in Python is TRUE?

Accepted Answer

Strings are compared character by character using their ASCII values.

Question 6

Given the following code, what will be printed?

if 'z' \u003c 'a':
    print('z is less than a.')
else:
    print('z is not less than a.')

Accepted Answer

z is not less than a.

Question 7

Which of the following is the correct way to check if a variable 'speed' is within the range 0 to 200 (inclusive) in Python?

Accepted Answer

$$	ext{if speed \u003e= 0 \, 	ext{and} \, speed \u003c= 200:}$$

Question 8

A program needs to determine if a user qualifies for a loan. The user must earn at least $30,000 per year and have been employed for at least 2 years. Which Boolean expression correctly represents this requirement?

Accepted Answer

$$	ext{salary \u003e= 30000 \, 	ext{and} \, years_on_job \u003e= 2}$$

Question 9

What is the main difference between a while loop and a for loop in Python?

Accepted Answer

A while loop is condition-controlled, and a for loop is count-controlled.

Question 10

What will the following code display?

total = 0
for count in range(1, 6):
    total = total + count
print(total)

Accepted Answer

$$15$$

Question 11

Which of the following best describes a sentinel value in a loop?

Accepted Answer

A value that marks the end of a sequence of items.

Question 12

What is the output of the following code?

for number in range(0, 501, 100):
    print(number)

Accepted Answer

0 100 200 300 400 500

Question 13

Which of the following statements about nested loops is TRUE?

Accepted Answer

The inner loop completes all its iterations for each iteration of the outer loop.

Question 14

Suppose you want to validate user input so that only positive numbers are accepted. Which structure is most appropriate?

Accepted Answer

A while loop that repeats as long as the input is negative.

Question 15

What is the result of the following Boolean expression if $$a = 2$$, $$b = 4$$, and $$c = 6$$?

$$a == 4 	ext{ or } b \u003e 2$$

Accepted Answer

True

Question 16

Which of the following best describes short-circuit evaluation in Python?

Accepted Answer

The right side of a logical operator is only evaluated if necessary.

Question 17

Which of the following is the correct syntax for an if-elif-else statement in Python?

Accepted Answer

if condition1:
    statements
elif condition2:
    statements
else:
    statements

Question 18

A program uses the following code to calculate the average rainfall over a number of years:

totalRainfall = 0.0
totalMonths = 0
for year in range(years):
    for month in range(12):
        monthRainfall = float(input('Enter the rainfall amount for the month: '))
        totalMonths += 1
        totalRainfall += monthRainfall
averageRainfall = totalRainfall / totalMonths

If the user enters 2 for years and inputs 10 for each month, what is the value of averageRainfall?

Accepted Answer

$$10.0$$

Decision and Repetition Structures in Python Programming

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