Quiz: Groups of Numbers

1. Which of the following sets does not include the number zero?
a. natural numbers
b. whole numbers
c. integers

For problems 2 through 5, indicate whether the statement is always true, sometimes true, or never true.

2. An integer is a whole number.
a. always true
b. sometimes true
c. never true
3. The decimal form of a rational number terminates.
a. always true
b. sometimes true
c. never true
4. If the decimal name of a number never ends but does have a repeating pattern, then it is a rational number.
a. always true
b. sometimes true
c. never true
5. Irrational numbers can be expressed in the form equation where x is an integer and y is a natural number.
a. always true
b. sometimes true
c. never true

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