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]: Buses are ____ times as fuel efficient as cars.
[A]: five


[Q]: Most programmable circuits have at least ____ channels.
[A]: two


[Q]: Today there are ____ engineers or scientists.
[A]:
no