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

[EX Q]: Some people routinely sleep only _ hours a night but feel fine during the day.
[EX A]: four

[EX Q]: Grasshoppers develop through _ to six instars.
[EX A]: five

[EX Q]: Clementines are easy to peel and have _ seeds .
[EX A]:
no