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]: Harpists spend ninety percent of their lives tuning their harps and ____ percent playing out of tune.
[EX A]: ten

[EX Q]: Numbers can be positive or ____ only.
[EX A]: zero

[EX Q]: Fluorescent lamps are much more efficient than incandescent bulbs and last six to ____ times longer.
[EX A]:
ten