In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
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Question: Men produce brand new sperm every _ to three months.

Answer: two


Question: Atoms are most stable when they have _ electrons in their outer electron energy level.

Answer: eight


Question: Male blackbucks possess long horns, ringed at the base, and spirally twisted up to _ turns.

Answer:
five