Replace the question mark with a number
[4069] Replace the question mark with a number - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 79 - The first user who solved this task is Thinh Ddh
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Replace the question mark with a number

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 79
The first user who solved this task is Thinh Ddh.
#brainteasers #math #riddles
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The doctor answered the phone...

The doctor answered the phone and heard the familiar voice of a colleague on the other end of the line. "We need a fourth for poker," said the friend.
"I'll be right over," whispered the doctor.
As he was putting on his coat, his wife asked, "Is it serious?"
"Oh yes, quite serious," said the doctor gravely. "In fact, there are three doctors there already!"
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David Rittenhouse

Died 26 Jun 1796 at age 64 (born 8 Apr 1732).American astronomer who was an early observer of the atmosphere of Venus. For observations for the transit of Venus on 3 Jun 1769, he constructed a high precision pendulum clock, an astronomical quadrant, an equal altitude instrument, and an astronomical transit. He was the first one in America to put spider web as cross-hairs in the focus of his telescope. He is generally credited with inventing the vernier compass and possibly the automatic needle lifter. He was professor of astronomy at the University of Pennsylvania. Benjamin Franklin consulted him on various occasions. For Thomas Jefferson he standardized the foot by pendulum measurements in a project to establish a decimal system of weights and measures.
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