Boolean logic

What is a Boolean?

• A number

• A value that is either True or False
  

• A type of loop

• A kind of variable

Answer explanation

Booleans only have two possible values: True or False.

Which of these is a Boolean expression?

• 5 + 3 = 8

• print("Hello")

• 7 > 2

• x = 10

Answer explanation

This is a comparison that evaluates to True or False.

In programming, what does Boolean logic help us do?

• Make decisions based on conditions

• Draw pictures

• Store text

• Play sounds

Answer explanation

Boolean logic helps programs choose what to do depending on conditions.

What does the AND operator do?

• Returns the opposite of a condition

• Returns True if any condition is True

• Returns False always

• Returns True if all conditions are True

Answer explanation

AND only returns True if every condition it checks is True.

What does the OR operator do?

• Returns True if all conditions are True

• Returns True if at least one condition is True
  

• Returns False if one condition is True
  

• Returns the opposite of a condition

Answer explanation

OR returns True if any one of the conditions is True.

What does the NOT operator do?

• Checks two conditions

• Combines two conditions

• Reverses a condition (True becomes False, False becomes True)
  

• Adds numbers together

Answer explanation

NOT flips the value of a condition.

If the statement “score >= 50” is True, what does it mean?

• The score is less than 50

• The score is exactly 50

• The score is negative

• The score is 50 or more

Answer explanation

The symbol >= means “greater than or equal to.”