TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Masturbation tends to peak when children are between the ages of _ and five.

SOLUTION: three

PROBLEM: Dingoes live to _ or six years of age in the wild and fifteen years in captivity.

SOLUTION: five

PROBLEM: Lambda phage can infect by either of _ methods.

SOLUTION:
two