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6966. The ball point pen was invited by___________?

September 20, 2025 by Admin

A. Chester Carlson

B. Petrache Poenaru

C. Johannes Gutenberg

D. Laszlo Biro

✅ The correct answer is option D.

Categories General Knowledge, GK Tags General Knowledge

6964. The Empire State Building is located in_______________.

6974. Founder of Exam is __________?

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