Is it possible to write a masters thesis in 10 days?
If by "writing" you mean to do the research/experiments/studying and then write the thesis then no.

If by "writing" you mean transforming your well organized notes into one document, then yes, maybe if you have great discipline.

If by "writing" you mean to start to write-up from not-so well organized notes, then most probably not.

If you want to try to make it, stop hanging around on the internet and start working.