Question

all natural numbers are members of which other subsets of real numbers?

Answer 1

Set of rational numbers

Answer 2

here is a picture of the subsets
http://www.formyschoolstuff.com/school/math/glossary/images/real-numbers.gif

Answer 3

if a small box is insider a bigger box, that means that it is a subset

Answer 4

the big boxes contain the smaller boxes as parts

Answer 5

if box B contains box A, then A is a subset of B