Which set does not contain –3?

the set of all real numbers
the set of all integers
the set of all whole numbers
the set of all rational numbers

Hey there!

A real number is any number that is rational, including integers and natural numbers. A rational number is any number that can be written as a ratio or isn't a square root of a number. An integer is any whole number (not including fractions) that exists, negative or positive. A whole number is the same as an integer except it only includes positive numbers. 

Since a set of whole numbers wouldn't be able to include any negative numbers, your answer would be your fourth option. 

Hope this helped you out! :-)

Yea they are simplyfiy the ratios