The negation of “All balls are round” is “At least one ball is not round.”

• True

• False

The negation of “Some fish live in freshwater” is “Not all fish live in fresh water.”

• True

• False

If a circle is a square, then a plant is a mammal.

• True

• False

{rational numbers} ∪ {irrational numbers} = {real numbers}

• True

• False

Angles that form a linear pair are also supplementary angles.

• True

• False

The figure below is a right triangle.

• True

• False

January is the first month of the year, and December is the tenth month.

• true conjunction

• false conjunction

• true disjunction

• false disjunction

2 + 3 = 6 or 4 + 7 = 10

• true conjunction

• false conjunction

• true disjunction

• false disjunction

The sum of two even counting numbers is even, and the sum of two odd counting numbers is even.

• true conjunction

• false conjunction

• true disjunction

• false disjunction

If I study, then I learn. I am learning. Therefore, I am studying.
The above argument is an example of _____.

• modus ponens

• modus tollens

• transitivity

• none of these