About Inventions and Inventors Quiz #850
Inventions and Inventors Quiz #850 was the quiz for Friday, October 30, 2026: 10 questions: 2 easy, 4 medium and 4 hard. Everyone who played Inventions and Inventors Quiz that day got the same quiz, and it stays here to play for 60 days.
The questions of Inventions and Inventors Quiz #850
- Which of these is credited to László Bíró?
- Which ancient counting tool uses beads on rods?
- Which of these is credited to Theodore Maiman?
- Which of these is credited to Bardeen, Brattain and Shockley?
- Which of these is credited to Lewis Urry?
- Which of these is credited to Elisha Otis?
- Who is credited with inventing the safety elevator brake?
- Who is credited with inventing the hook-and-loop fastener?
- Who is credited with building the first working laser?
- Who is credited with inventing the pendulum clock?
The answer options and the answers appear only when you play the quiz, one question at a time.
New to Inventions and Inventors Quiz? The rules, tips and common questions are on the Inventions and Inventors Quiz page.
Other days of Inventions and Inventors Quiz
- Inventions and Inventors Quiz #849, Oct 29
- Inventions and Inventors Quiz #848, Oct 28
- Inventions and Inventors Quiz #847, Oct 27
- Today’s quiz, #851
Every day of the last 60 is in the puzzle archive.