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Inventions MCQs – Certification Test 19

Sharpners MCQ (Question 19) – Study App & e-Book Download

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MCQ 19: Sharpeners were discovered by a French mathematician named as:

  1. Sir Henry W. Seelay
  2. Sir Schuyler Skaats Wheeler
  3. Sir Samuel W. Francis
  4. Sir Bernard Lassimonne
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