instruction:
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
question:
Babies can range in age from newborn up to _ years old.
answer:
three


question:
Masturbation tends to peak when children are between the ages of _ and five.
answer:
three


question:
Botanists currently recognize _ species of Hevea.
answer:

nine