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.

[EX Q]: Hearing is acute by three or ____ weeks and kittens learn to determine what sounds mean.
[EX A]: four

[EX Q]: Minorities are ____ less likely than whites to suffer from illnesses that cause great pain.
[EX A]: no

[EX Q]: Butane has ____ carbon molecules, so it's heavier than propane.
[EX A]:
four