TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Melanocytes are dendritic and are distributed roughly _ per six basal cells.

SOLUTION: one

PROBLEM: Pollination is accomplished only by insect-agency, and where insects fail _ fruits are ripened.

SOLUTION: no

PROBLEM: Smokers lose their teeth at a rate _ times greater than nonsmokers.

SOLUTION:
three