Given:
The set,
[tex]U=\mleft\{1,2,3,4,5,6,7,8,9,10\mright\}[/tex]To find the set of all numbers x such that for all x is even:
Let us find the even numbers from the given set.
So, the set of all even numbers is,
[tex]\mleft\lbrace2,4,6,8,10\mright\rbrace[/tex]Hence, the answer is,
[tex]\lbrace2,4,6,8,10\rbrace[/tex]