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

[EX Q]: Many Asian countries deny entry to travelers whose passports are valid for less than _ months.
[EX A]: six

[EX Q]: Sweet corn accounts for about _ per cent of total corn production in Ontario.
[EX A]: five

[EX Q]: Earthquakes produce _ different types of seismic waves.
[EX A]:
three