In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
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Question: Some dentists prefer using the oral rinse for _ to five days at a time.

Answer: three


Question: Birds begin dying of fowl cholera _ to nine days after exposed to the virus.

Answer: four


Question: Deserts are regions that receive less than _ inches of rain a year.

Answer:
ten