AP CSP Boolean Logic 3

The two variables age and day are initialized with the values shown.

age <-- 16

day <-- "Tuesday"

Choose the compound conditional that evaluates to true.

• ( (age = 16) AND (day = "Tuesday") ) AND (day = "Monday")

• ( (age < 16) AND (day = "Tuesday") ) OR (day = "Monday")

• ( (age > 10) AND ( (age + 4) > 20 ) )

• NOT ( (age = 16) AND ( NOT (day = "Tuesday") ) )

This program uses a conditional to determine if seafood is safe to consume.

In which situations will rating be "safe"?

Note that there may be multiple answers to this question.

Choose all answers that apply:

• When seafood is "mollusk" and daysFrozen is 1

• When seafood is "mollusk" and daysFrozen is 9

• When seafood is "tuna" and daysFrozen is 3

• When seafood is "salmon" and daysFrozen is 7

• When seafood is "salmon" and daysFrozen is 6

The following expression is from the data loading logic of a website.

NOT ( state = "loading" OR result = "error" )

Which of these expressions are logically equivalent?

• state ≠ "loading" AND result ≠ "error"

• state = "loading" AND result = "error"

• NOT ( state = "loading" AND result = "error" )

• state ≠ "loading" OR result ≠ "error"

This program uses a nested conditional to recommend a heat level for cooking eggs.

In which situations will heatLevel be "medium"?

Choose 1 answer.

• When inHurry is false and eggDish is "fried"

• When inHurry is true and eggDish is "fried"

• When inHurry is false and eggDish is "scrambled"

• When inHurry is true and eggDish is "scrambled"

This circuit takes the output of an AND gate and sends it through a NOT gate. This circuit is logically equivalent to the NAND logic gate, a common gate in computers.

Select the output column that correctly completes out the truth table for the circuit.

• 1

  1

  1

  0

• 0

  1

  1

  1

• 0

  1

  1

  0

• 1

  0

  0

  1

Given the procedure:

What will be displayed after the following statement is executed?

DISPLAY ( adjustCount (9) + adjustCount (17) )

• 28

• 32

• 33

• 35

Two grids are shown. Each grid contains a robot represented as a triangle. Both robots are initially facing left. Each robot can move into a white or gray square, but cannot move into a black region.

For each grid, the program below is intended to move the robot to the gray square. The program uses the procedure Goal_Reached ( ), which evaluates to true if the robot is in the gray square and evaluates to false otherwise.

For which of the grids does the program correctly move the robot to the gray square?

• Grid I only

• Grid II only

• Both grid I and grid II

• Neither grid I nor grid II

A programmer named Johnny has a programming style in which he does not like to indent his code. Here is an example of a procedure Johnny recently created. It is supposed to return "ELEPHANT" if the type of animals is "E", "GIRAFFE" if the type of animal is "G" and the height is "TALL", or "GORILLA" if the type of animal is "G" and the height is "AVERAGE". If none of these conditions are true, then return "UNKNOWN".

Does this procedure always return the correct animal as specified above?

• Yes, this procedure returns the correct value for all test cases.

• No, this procedure will not return the correct value if the animal type is "G" and height is "AVERAGE".

• No, this procedure will not return the correct value if the animal type is "E" and height is "AVERAGE".

• No, this procedure will not return the correct value if the animal type is "G" and height is "TALL".

An office building has two floors. A computer program is used to control an elevator that travels between the two floors. Physical sensors are used to set the following Boolean variables.

The elevator moves when the door is closed and the elevator is called to the floor that it is not currently on.

Which of the following Boolean expressions can be used in a selection statement to cause the elevator to move?

• (NOT(onFloor1) AND callTo1) AND (NOT(onFloor2) AND callTo2)

• (NOT(onFloor1) AND callTo1) OR (NOT(onFloor2) AND callTo2)

• (NOT(onFloor1) OR callTo1) AND (NOT(onFloor2) OR callTo2)

• (NOT(onFloor1) OR callTo1) OR (NOT(onFloor2) OR callTo2)

Central High School keeps a database of information about each student, including the numeric variables numberOfAbsences and gradePointAverage. The expression below is used to determine whether a student is eligible to receive an academic award.

(numberOfAbsences ≤ 5) AND (gradePointAverage ≥ 3.5)

Which of the following pairs of values indicates that a student is eligible to receive an academic award?

• numberOfAbsences = 3, gradePointAverage = 3.4

• numberOfAbsences = 6, gradePointAverage = 3.8

• numberOfAbsences = 5, gradePointAverage = 3.4

• numberOfAbsences = 5, gradePointAverage = 3.6