Which subset of the number system consists of numbers like -3,0, and 7?

Which of the following sets represent whole numbers?

Are all integers numbers considered rational numbers?

What subset is described as any number expressed as the ratio of two integers a and b, and b is not equal to 0?

What subset of the number system includes numbers that are negative counting numbers?

What subset of the number system includes numbers with non-repeating, non-terminating decimals?

If a number is represented as 3.333..., which subset of the number system does it belong to?

 Which subset of the number system does the number 0 belong to?

What set pertains to the intersection of real and imaginary numbers?

Which subset of the number system includes such as 1/2, -5, and 0.75?