instruction:
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
question:
Cigarette smokers have up to a _ times higher incidence of bladder cancer than non-smokers.
answer:
four

question:
Full sun is classified as any area that receives a minimum of _ hours of direct sunlight each day.
answer:
six

question:
Solvents have _ classes of solubility.
answer:
three