In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

Input: Consider Input: College students are _ times more likely to become infected than healthy adults.

Output: five


Input: Consider Input: Nymphs feed for five to _ weeks before entering the adult stage.

Output: eight


Input: Consider Input: Ruthenium is a hard, white metal and has _ crystal modifications.


Output: four