TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Most orangutans are four to _ feet long, some can reach a length of six feet.

SOLUTION: five

PROBLEM: Human eye are only about _ times sharper than a jumping spider's.

SOLUTION: five

PROBLEM: Pelvic fins are well developed, and rather narrow, with nine to _ fin rays.

SOLUTION:
ten