Answer
$\emptyset$;$\{red\}$; $\{blue\}$; $\{yellow\}$;$\{red,blue\}$; $\{red, yellow\}$; $\{blue, yellow\}$; $\{red, blue, yellow\} $
Work Step by Step
We are given $\{red, blue, yellow\} $
Start with the empty set: $\emptyset$.
List the subsets with one element: $\{red\}$; $\{blue\}$; $\{yellow\}$
List the subsets with two elements: $\{red,blue\}$; $\{red, yellow\}$; $\{blue, yellow\}$
List the subsets with three elements: $\{red, blue, yellow\} $
