Define Boolean value .

A Boolean value is a value that can only be true or false .

Define relational operator .

A relational operator compares two values and returns a Boolean result .

Name the six relational operators in AP CSP pseudocode.

The relational operators are = , ≠ , , ≤ , and ≥ .

Name three kinds of Boolean operand .

Boolean operands can be literal Boolean values , variables that hold Boolean values , or relational expressions .

True or False? true OR false evaluates to false.

False. true OR false evaluates to true , because OR is true if at least one operand is true .

Name the three logic operators in AP CSP pseudocode.

The three logic operators are NOT , AND , and OR .

When does AND return true?

AND returns true only if both operands are true .

What does the NOT operator do?

The NOT operator reverses a Boolean value , so NOT true evaluates to false .

A _____ _____ shows every possible combination of Boolean inputs and the corresponding output.

A truth table shows every possible combination of Boolean inputs and the corresponding output.

What is displayed when this code segment runs? age ← 15 DISPLAY(age ≥ 13 AND age < 18)

The code segment displays true , because 15 ≥ 13 is true and 15 < 18 is true.

What is displayed when this code segment runs? isRaining ← false hasUmbrella ← false DISPLAY((NOT isRaining) AND hasUmbrella)

The code segment displays false : NOT isRaining is true, but hasUmbrella is false, and true AND false is false .

AP®Computer ScienceCollege BoardComputer Science PrinciplesFlashcardsUnit 3: Algorithms and ProgrammingBoolean Expressions

Boolean Expressions (College Board AP® Computer Science Principles): Flashcards

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Define Boolean value.

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Cards in this collection (12)

Define Boolean value.
A Boolean value is a value that can only be true or false.
Define relational operator.
A relational operator compares two values and returns a Boolean result.
Name the six relational operators in AP CSP pseudocode.
The relational operators are =, ≠, <, >, ≤, and ≥.
What does 7 ≤ 7 evaluate to?
7 ≤ 7 evaluates to true.
Name three kinds of Boolean operand.
Boolean operands can be literal Boolean values, variables that hold Boolean values, or relational expressions.
True or False?
true OR false evaluates to false.
False.
true OR false evaluates to true, because OR is true if at least one operand is true.
Name the three logic operators in AP CSP pseudocode.
The three logic operators are NOT, AND, and OR.
When does AND return true?
AND returns true only if both operands are true.
What does the NOT operator do?
The NOT operator reverses a Boolean value, so NOT true evaluates to false.
A _____ _____ shows every possible combination of Boolean inputs and the corresponding output.
A truth table shows every possible combination of Boolean inputs and the corresponding output.
What is displayed when this code segment runs?
```
age ← 15
```
```
DISPLAY(age ≥ 13 AND age < 18)
```
The code segment displays true, because 15 ≥ 13 is true and 15 < 18 is true.
What is displayed when this code segment runs?
```
isRaining ← false
```
```
hasUmbrella ← false
```
```
DISPLAY((NOT isRaining) AND hasUmbrella)
```
The code segment displays false: NOT isRaining is true, but hasUmbrella is false, and true AND false is false.

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