APCSP Unit 1 Variables, Random, Math Practice Questions

A developer is creating a program that will store a user's email address and whether the user has verified their account. Which of the following variables are most appropriate for the program?

• A string variable named e and a Boolean variable named v

• A string variable named emailAddress and a Boolean variable named isVerified

• A string variable named email and a numeric variable named verificationStatus

• A string variable named userEmail and a numeric variable named verified

Consider the following code segment, which uses the variables x, y, and z.

x ← 4

y ← 5

z ← 6

x ← z

y ← x

DISPLAY (x)

DISPLAY (y)

What is displayed as a result of running the code segment?

• 4 5

• 5 6

• 6 6

• 6 5

The variable amountBooks is to be used to represent the amount of books on a shelf. Which of the following is the most appropriate data type for numBooks?

• Boolean

• String

• Number

• Array

Consider the following code segment.

a ← 15

b ← a MOD c

Which of the following initial values of the variable c would result in the variable b being set to 3 after the code segment is executed?

• 2

• 3

• 4

• 5

A die has 6 faces numbered 1 to 6. Which of the following code segments can be used to simulate rolling the die four times and assigns the sum of the values obtained by the four different rolls to the variable total?

• total ← RANDOM(1, 6) + RANDOM(1, 6) + RANDOM(1, 6) + RANDOM(1, 6)

• total ← RANDOM(1, 24)

• total ← 4 * RANDOM(1, 6)

• total ← 6 * RANDOM(1, 4)

What is the result of executing the code segment with variables a, b, c, and d initialized as shown?

• 11 30 40 55

• 12 35 35 50

• 17 45 35 60

• 10 25 35 50

Which code segment correctly simulates two spins of a spinner with 8 equal regions?

• sum ← RANDOM(1, 8) + RANDOM(1, 8)

• sum ← RANDOM(1, 16)

• sum ← 2 * RANDOM(1, 8)

• sum ← 8 * RANDOM(1, 2)

What is the result of the following expression? print( (20 MOD 6) + (8 MOD 3) );

• 3

• 4

• 5

• 6

• 7

What kind of data does an string contain?

• Whole numbers

• Letters, special characters, numbers, or words

• Numbers with decimal components

• True or False

Which one is the example of the data types numeric?

• A

• 28.02

• 19

• [e-mail]