4 ∈ {4, 14, 17} is this true or false

The symbol " ∈" means "belongs to".

This means that a certain element belongs to or is found in the set.

The set given contains three numbers which are 4, 14 and 17.

As you can see, 4 is found in this set, therefore, 4 belongs to this set.

Based on this, the given statement is true.