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

[Q]: Comets are a bit like giant dirty ice-balls with diameters between _ and fifty kilometres.
[A]: five


[Q]: Most turbines have either two or _ blades.
[A]: three


[Q]: Tobacco use is responsible for nearly one in _ deaths in the United States.
[A]:
five