How to multiply odd numbers

Practice Questions

PSAT Math › How to multiply odd numbers

Questions
10
1

odd * odd * odd =

2

Theodore has jelly beans. Portia has three times that amount. Harvey has five times as many as she does. What is the total count of jelly beans in the whole group?

3

odd * odd * odd =

4

If n and m are both positive even integers, which of the following must be odd?

I. (n + 1)(m + 1)

II. nm + 1

III. nm + m

5

If is an odd integer, all of the following must be odd integers EXCEPT:

6

You are given that , , and are positive integers, and

In which of the following cases is odd?

I) Exactly one of is odd.

II) Exactly two of are odd.

III) Exactly three of are odd.

7

You are given that , , and are positive integers, and

is odd.

Which of the following is possible?

I) Exactly one of is odd.

II) Exactly two of are odd.

III) Exactly three of are odd.

8

When 8 integers are multiplied their product is negative, then at most how many of the integers can be negative?

9

If and are both odd integers, which of the following is not necessarily odd?

10

When 2013^{2013} is evaluated, what number is in the ones digit?

Return to subject