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

[EX Q]: Trees begin to bear _ to seven years after planting the root shoot.
[EX A]: five

[EX Q]: Many people spend _ or more hours a day working for someone else.
[EX A]: eight

[EX Q]: Ovarian cancer has _ symptoms in the early stages.
[EX A]:
no