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

[EX Q]: Education wastes about _ thirds of the talent of society.
[EX A]: two

[EX Q]: Falcons are roughly divisible into three or _ groups.
[EX A]: four

[EX Q]: Rock bass are small to medium sized sunfish, reaching _ to ten inches in length.
[EX A]:
six