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

[EX Q]: Flexible shapes are also shapes which have _ obvious way of being attacked.
[EX A]: no

[EX Q]: Young groundhogs are weaned and ready to seek their own dens at _ to six weeks of age.
[EX A]: five

[EX Q]: Japan is the second largest single country importer with about _ per cent of world oat imports.
[EX A]:
five