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

[EX Q]: Women are _ times as likely to develop osteoporosis but men can also develop it.
[EX A]: four

[EX Q]: Normal adults appear to require _ to eight hours of sleep per day on average.
[EX A]: six

[EX Q]: Blood pressure is recorded using _ numbers.
[EX A]:
two