Inventions Practice Tests
Inventions Online Tests
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The MCQ: Sharpeners were discovered by a French mathematician named as; "Sharpners" App Download (Free) with answers sir henry w. seelay, sir schuyler skaats wheeler, sir samuel w. francis and sir bernard lassimonne for online school classes. Solve inventions and inventors quiz questions, download Google eBook (Free Sample) for elementary school graduation certificate.
MCQ : Sharpeners were discovered by a French mathematician named as
MCQ 1: In which one of the following year, sharpeners were patented?
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