TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Metals often crystallize in a _ dimensional version of the hexagonal closest packed structure.

SOLUTION: three

PROBLEM: All Jovian planets have rings around their equators and at least _ moons.

SOLUTION: eight

PROBLEM: Some girls bleed as young as _ years old.

SOLUTION:
nine