The number is
. \ \
§ Observe the Venn diagram:
\§ The number
is a integer number (Z).
§ The number
is a rational number (Q)
§ The sets of Whole numbers (W), integers (Z),are subsets of rational number (Q).
\§ All rational numbers (Q) are real numbers (R).
The number
belongs to, W, Z, Q, and R.