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

[Q]: Bifocal lenses have _ distinct segments with different powers.
[A]: two


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


[Q]: Women are _ times as likely as men are to develop osteoporosis.
[A]:
four