Calculate the number 1309
[925] Calculate the number 1309 - NUMBERMANIA: Calculate the number 1309 using numbers [5, 3, 5, 6, 81, 730] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 31 - The first user who solved this task is Sanja Šabović
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Calculate the number 1309

NUMBERMANIA: Calculate the number 1309 using numbers [5, 3, 5, 6, 81, 730] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 31
The first user who solved this task is Sanja Šabović.
#brainteasers #math #numbermania
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An HMO Manager at the Pearly Gates

Two doctors and an HMO manager died and lined up at the pearly gates for admission to heaven.
St. Peter asked them to identify themselves
. One doctor stepped forward and said, "I was a pediatric spine surgeon and helped kids overcome their deformities."
St. Peter said, "You can enter.
"The second doctor said, "I was a psychiatrist. I helped people rehabilitate themselves."
St. Peter also invited him in.
The third applicant stepped forward and said, "I was an HMO manager. I helped people get cost-effective health care."
St. Peter said, "You can come in, too.

"But as the HMO manager walked by, St. Peter added, "You can stay three days. After that, you can go to Hell."

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Spirit level

In 1666, Robert Hooke invented the spirit level, according to Sir David Brewster in the 1832 Edinburgh Encyclopedia. It was likely a variation on the spirit level, or “artificial horizon,” which he may have used while employed as City Surveyor of London after the Great Fire. The original concept was due to Melchisédech Thévenot, sometime before 2 Feb 1661, the date of his letter about it to Christiaan Huygens. In the 1670s, Hooke added a spirit level to his quadrant.«
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