In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
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Question: Titanium is found in column _ along with chemically similar zirconium, hafnium, and thorium.

Answer: four


Question: Glycolysis occurs in the cytoplasm and produces _ pyruvic acid.

Answer: two


Question: Young rats become sexually mature at about three months, with most living _ months to a year.

Answer:
six