In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

Q: Breast cancer strikes one out of every _ or nine women.

A: eight
****
Q: Most people go back to work within _ to three months after having a heart attack.

A: one
****
Q: Meteorites fall into _ main categories - iron, stone, and stony iron.

A:
three
****