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

[EX Q]: Black people live about _ fewer years, on average, than white people do.
[EX A]: six

[EX Q]: Downies range in age from eighteen months to _ years.
[EX A]: three

[EX Q]: Baryons contain _ quarks while mesons contain only two quarks.
[EX A]:
three