61.

Ralph Samuelson was only 18 when he invented this sporting item in 1922. What was that?
A. Golf tee B. Motorboat
C. Water skis D. Hang glider
Answer and Explanation
Answer:C
Explanation: The new item was first used on Lake Pepin in Minnesota.
62.

Who invented Bifocal Lens?
A. Alfred B. Nobel B. Thomas Alva Edison
C. Benjamin Franklin D. Rudolf Diesel
Answer and Explanation
Answer:C
Explanation: No answer description available for this question
63.

What Karl Benz invented?
A. Gasoline powered automobile B. Streetcar
C. Glider D. Steam turbine
Answer and Explanation
Answer:A
Explanation: Invented in 1885.
64.

When were bar code scanners invented?
A. 1940s B. 1950s
C. 1970s D. 1960s
Answer and Explanation
Answer:C
Explanation: The scanner reads the bar code label on something at a supermarket, and translates it into a number which the computer reads.
65.

When was the game Frisbee invented?
A. 1920s B. 1900s
C. 1870s D. 1890s
Answer and Explanation
Answer:C
Explanation: The first Frisbees were pie tins from the Frisbie Pie Company in Connecticut. In the 1950s, the pie tins were changed to plastic plates. The name then became the Flying Saucer, but later changed to Frisbee.