TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Sewage travels through _ different sets of pipes.

SOLUTION: three

PROBLEM: Snow is made from snowflakes, which are _ sided.

SOLUTION: six

PROBLEM: Cats have five toes on each front paw, but only _ toes on each back paw.

SOLUTION:
four