Number Properties

Question 1

Is 0 odd or even?

Answer 1

0 is even

Question 2

Is 0 positive or negative?

Answer 2

0 is neither positive or negative. Problems often use the phrase “positive integers”– read carefully and realize they are talking about 1, 2, 3…. etc

Question 3

If xy < 0 , what can we conclude about x and y?

Answer 3

x and y have opposite signs:

one is positive, one is negative

Question 4

If xyz > 0 , what can we conclude about x, y and z?

Answer 4

All 3 can be positive, OR there are 2 negatives and 1 positive

Question 5

If y is an integer, what determines whether (-2)^y is positive or negative?