Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.

[Q]: Atoms are extremely small, on the order of a few ____ billionths of a meter.
[A]: ten


[Q]: Pinks live only ____ years.
[A]: two


[Q]: Most people remove ashes every ____ to three weeks.
[A]:
two