Multiple choice

Who developed a mechanical device in 17th century that could add, subtract, multiply, divide & find square root?

  1. Napier

  2. Babbage

  3. Pascal

  4. Leibnitz

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Gottfried Wilhelm Leibniz invented the Stepped Reckoner in the 17th century, a mechanical calculator capable of performing all four arithmetic operations and square roots.