Question

set of real numbers in set builder form

Answer 1

the real number is the set of rational irrational interior natural and whole number

Answer 2

${ ℝ = } {\brace{ \large{x : - \infty < x < + \infty }}}$

OR

${ℝ = } {\brace{ \large{x :x \inℚ \: ∪\sf{T } }}}$

where,

ℚ stands for Rational Numbers.

T stands for Irrational Numbers