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Challenging Knowledge Quiz
Question 1 of 10
What 1952 invention is classified as a "ptical machine-readable representation of data" on a product?
Question 2 of 10
What expensive precious metal is a major South African export?
Question 3 of 10
What number is 20% of 40?
Question 4 of 10
About an aging child star and her crazed sister, "What Ever Happened to Baby Jane" used actual clips from what two women's archive of films?
Question 5 of 10
What did Evangelista Torricelli invent in 1643?
Question 6 of 10
Slobodan Milošević was tried in 1999 for war crimes in which country?
Question 7 of 10
The appendix is a small tube branching off which organ?
Question 8 of 10
Who made the song that begins with: 'Whoa! I feel good - I knew that I would, now - I feel good'?
Question 9 of 10
Which Washington mountain erupted in 1980?
Question 10 of 10
What are the artificial visual pictures that people often make from star clusters called?

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