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

[EX Q]: Adolescent suicide is approximately _ times higher than the national average.
[EX A]: three

[EX Q]: Most solenoids have _ tabs with holes for mounting.
[EX A]: two

[EX Q]: Most people spend four to _ years going to school acquiring skills so they can work.
[EX A]:
eight