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

[EX Q]: Tetrachoric correlation is _ artificially dichotomous variables.
[EX A]: two

[EX Q]: Some women have _ or more children by different men.
[EX A]: five

[EX Q]: Zeolites have basically _ different structural variations.
[EX A]:
three