TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Credit reports describe an individual's credit history for the last _ to ten years.

SOLUTION: seven

PROBLEM: Boolean operations is a method of combining _ meshes together.

SOLUTION: two

PROBLEM: All female kangaroos have front-opening pouches, which contain _ teats.

SOLUTION:
four