To which subset of the real number system does the number LaTeX: 1.\overline{5}1. 5 ¯ belong?

The subset of rational numbers

Step-by-step explanation:

Rational numbers are numbers that can be expressed in the form a/b where ad b are integers. The number is a number with a recurring decimal of 5 and every recurring decimal can be expressed in the form a/b where a and b are both integers therefore, every number with recurring decimal is a rational number.

In the question,    can be written as follows;

or .

the 3rd option is right

step-by-step explanation:

b) well because you get well