Number Systems

Question 1

Define natural numbers

Answer 1

The counting numbers

Question 2

Define whole numbers

Answer 2

The natural numbers together with the number zero

Question 3

Define integers

Answer 3

The whole numbers together with all the negative integers

Question 4

Define rational numbers

Answer 4

All the numbers that can be written in the form a/b where a and b are integers and b is not equal to 0.
Terminating and recurring decimals are included

Question 5

Define irrational numbers

Answer 5

All the numbers which cannot be written in the form a/b where a and b are integers and b does not equal to 0.
Non-terminating and non-recurring numbers.
The square root of any number that is not a perfect cube or square.

Question 6

Define real numbers

Answer 6

All the rational numbers together with all the irrational numbers

Question 7

Define factors

Answer 7

Natural numbers which always divide into that number without any remainder