04.04 Using Standard Modules - Quiz

Check your understanding

1. Which statement correctly imports the math module?

   • include math
   • import math { data-correct }
   • use math
   • from python import math

2. What does math.sqrt(25) return?

   • 25
   • 5.0 { data-correct }
   • 625
   • An error

3. Which function generates a random integer between 1 and 10 (inclusive)?

   • random.random(1, 10)
   • random.randint(1, 10) { data-correct }
   • random.range(1, 10)
   • random.integer(1, 10)

4. What is the value of math.ceil(4.2)?

   • 4
   • 5 { data-correct }
   • 4.2
   • 4.0

5. Which function would you use to randomly select one item from a list?

   • random.select()
   • random.pick()
   • random.choice() { data-correct }
   • random.get()

6. What does math.pi represent?

   • The value 3.14159… { data-correct }
   • A function to calculate pi
   • The variable name for pi
   • An error

7. What does random.seed(42) do?

   • Generates the number 42
   • Sets the random number generator to produce reproducible sequences { data-correct }
   • Creates 42 random numbers
   • Limits random numbers to 42

8. Which function calculates the square of a number using the math module?

   • math.square(x)
   • math.pow(x, 2) { data-correct }
   • math.sqrt(x)
   • math.exp(x)

9. What is a “pure function”?

   • A function that only uses built-in Python features
   • A function that always returns the same output for the same input and has no side effects { data-correct }
   • A function that doesn’t use any modules
   • A function written in pure Python code

10. What does random.uniform(5.0, 10.0) return?

    • Always 7.5
    • A random integer between 5 and 10
    • A random float between 5.0 and 10.0 { data-correct }
    • A list of numbers from 5 to 10

11. Which import statement is generally preferred for clarity?

    • from math import *
    • import math { data-correct }
    • import math as m
    • from math import everything

12. What does math.radians(90) convert?

    • 90 radians to degrees
    • 90 degrees to radians { data-correct }
    • 90 to square root
    • 90 to logarithm