Boolean Expressions

Give the Boolean value (true or false):

5 > 10

• True

• False

Give the Boolean value (true or false):

8 < 12

• True

• False

Give the Boolean value (true or false). The compiler understands the words "and", "or", and "not".

(5 > 10) or (8 < 12)

• True

• False

Give the Boolean value (true or false):

(5 > 10) and (8 < 12)

• True

• False

In the last two statements, there were two "stand alone" statements joined by either "or" or "and". What makes an "or" statement true?

• Neither stand alone statement should be true

• At least one stand alone statement must be true.

• Exactly one stand alone statement must be true.

• Both stand alone statements must be true.

When two stand alone statements are joined by the word "and", what makes the entire statement true?

• Neither stand alone statement should be true.

• At least one stand alone statement must be true.

• Exactly one stand alone statement must be true.

• Both stand alone statements must be true.

Give the Boolean value of the following:

12 <= 20

• True

• False

Give the Boolean value of the following:

not(12 <= 20)

• True

• False

Give the Boolean value of the second line:

x := 300; {x is an integer}

(x < 400) and (x > 500)

• True

• False

Give the Boolean value of the second line:

x := 300; {x is an integer}

(x < 400) or (x > 500)

• True

• False