What was invented by Levi Spear Parmly?
- The jet engine
- Dental floss
- Blue Ray discs
- The QWERTYU keyboard
Answer
The correct answer is B) Dental floss.
More General Knowledge questions
- The Olivieri brothers, Pat and Harry, are given credit for inventing this in 1933.
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- Eight years before George Washington was elected President of the USA, this politician was appointed President of the United States by the Continental Congress.
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- Which of these came first?
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