What is the missing number?
[5769] What is the missing number? - What is the missing number? - #brainteasers #math #riddles - Correct Answers: 66 - The first user who solved this task is Nasrin 24 T
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What is the missing number?

What is the missing number?
Correct answers: 66
The first user who solved this task is Nasrin 24 T.
#brainteasers #math #riddles
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Saving Life

A college physics professor was explaining a particularly complicated concept to his class when a pre-med student interrupted him.
"Why do we have to learn this stuff?" The young man blurted out.
"To save lives," the professor responded before continuing the lecture.
A few minutes later the student spoke up again. "So how does physics save lives?"
The professor stared at the student for a long time. "Physics saves lives," he said, "because it keeps the idiots out of medical school."

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Ball point pen

In 1943, Laszlo Biro filed for a British patent (No. 564172) on a practical ball point pen with quick-drying ink. Biro was a journalist, in 1938, in Budapest (also sculptor and hypnotist) when he took out a Hungarian patent for his first design of the pen. In 1940, he escaped the Nazis by going via Paris to Buenos Aires, Argentina. There a British entrpreneur, Henry Martin, saw Biro’s pen and realized its value for air crews making high altitude navigational calculations. It could write blot-free, unaffected by low or changing atmospheric pressure. Martin bought the rights and began small scale production of ballpoint pens for the RAF. In 1945, the Eterpen Co in Buenos Aires began commercial production.«
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