Calculate the number 250
[799] Calculate the number 250 - NUMBERMANIA: Calculate the number 250 using numbers [2, 5, 1, 7, 57, 138] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 37 - The first user who solved this task is Sanja Šabović
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Calculate the number 250

NUMBERMANIA: Calculate the number 250 using numbers [2, 5, 1, 7, 57, 138] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 37
The first user who solved this task is Sanja Šabović.
#brainteasers #math #numbermania
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NASA Mars Mission

NASA was interviewing professionals they were planning on sending to Mars. The touchy part was that only one guy could go and it would be a one way trip, the guy would never return to Earth.

The interviewer asked the first applicant, an engineer, how much he wanted to be paid for going.

"One million dollars," the engineer answered. "And I want to donate it all to my alma mater -- Rice University."

The next applicant was a doctor, and the interviewer asked him the same question.

"Two millions dollars," the doctor said. "I want to give a million to my family and leave the other million for the advancement of medical research."

The last applicant was a lawyer. When asked how much money he wanted, he whispered in the interviewer's ear, "Three million dollars."

"Why so much more than the others?" the interviewer asked.

The lawyer replied, "You give me three million, I'll give you one million, I'll keep a million, and we'll send the engineer."

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Hale telescope

In 1948, the 200-inch (5.08 m) reflecting Hale telescope at the Palomar Mountain Observatory in California was dedicated. This was the first in the world with a 200-inch lens, which after casting was permitted to cool slowly over an 11 month period. The resulting 20-ton glass disk then required years years of careful grinding and polishing, interrupted by WW II. The telescope was officially named after Dr. George Ellery Hale who conceived, designed and promoted this telescope, though he died before it was completed. On 1 Feb 1949, studies first began with observations were first made of the constellation Coma Berenices.
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