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Mathematics 18 Online
OpenStudy (anonymous):

what is the best invention ever. Write what u think is the bed invention ever

OpenStudy (anonymous):

This is a very subjective question, and not really mathematics! Are there any inventions which particularly interest you?

OpenStudy (anonymous):

@indivicvet yes mechanical pencils

OpenStudy (anonymous):

@Indivicivet

OpenStudy (anonymous):

Humans!

OpenStudy (anonymous):

hehe

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