4 Numbers

Logic Level 2

The goal is to use all given numbers (each of them once) and the following operations - \(+\), \(-\), \(\times\),\(\div\) and parentheses - to formulate the equation that equals to the number \(24\).

Given four numbers \(20\), \(30\), \(21\) and \(4\), is it possible to create an equation that equals \(24\)?