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

[EX Q]: Mares normally give birth to their first foal when they are between _ and six years of.
[EX A]: three

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

[EX Q]: Bilinear interpolation is used for interpolation between the _ values.
[EX A]:
four