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

[EX Q]: Cardinals are approximately _ and three fourths inches in length.
[EX A]: eight

[EX Q]: Light falls on a _ dimensional object and creates a shadow.
[EX A]: three

[EX Q]: Pharmacists dispense nearly _ billion prescriptions a year.
[EX A]:
three