Number systems

-1 is not included in which of the following

• Natural Number
• Rational Number
• Real Number
• Integer

12 is not included in which of the following

• Natural Number
• Irrational Number
• Real Number
• Integer

What is this number an example of '29th'

• Natural Number
• Ordinal number
• Real Number
• Integer

What is the symbol 'Z' representative of

• Natural Number
• Ordinal number
• Real Number
• Integer

What is the difference between natural numbers and integers?

• Integers can include negatives
• Natural numbers can include negatives
• Natural numbers have to be a whole number
• Integers can include 0

What type of number is used for identifying the size of something?