In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
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Question: Most cats have only four to _ toes per paw, depending on whether it is the front or back paw.

Answer: five

Question: Birds bitten by infected mosquitoes are infectious from _ to eight days.

Answer: four

Question: Genetic variation arises through _ processes, mutation and recombination.

Answer:
two