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

Q: All imaginary numbers are complex numbers with _ for the real part.

A: zero
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Q: Pelvic fins are well developed, and rather narrow, with _ to ten fin rays.

A: nine
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Q: Charity is the mother of _ sisters, patience and obedience.

A:
two
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