Calculate the number 472
[7695] Calculate the number 472 - NUMBERMANIA: Calculate the number 472 using numbers [9, 2, 1, 8, 12, 526] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 1
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Calculate the number 472

NUMBERMANIA: Calculate the number 472 using numbers [9, 2, 1, 8, 12, 526] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
#brainteasers #math #numbermania
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Broke student

A college freshman called up his mother and asked her for some money, because he was broke. His mother said,

"Sure, sweetie. I will send you some money. You also left your

calculus book here when you visited 2 weeks ago.

Do you want me to send that up too?"

"Uhh, oh yeah, O.K." responded the student.

So his mom wrapped up the book and mailed it. Dad asked,

"Well how much did you give him?"

"Oh, I wrote 2 checks, one for $20, and the other for $500."

"That's $520!" said dad, "Are you crazy?"

"Don't worry honey," mom said. "I taped the $20 check to the

cover of his book, but I put the $500 one somewhere in ...

chapter 19!

Found on https://vk.com/notes15935520, posted by Liana Parhanita, on 4 Mar 2010

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Richard Brooke Roberts

Died 4 Apr 1980 at age 69 (born 7 Dec 1910).American biophysicist who contributed most to the discovery of "delayed neutrons" - that uranium fission does not release all the neutrons it produces at one time, but some come off at measurably later times. Some are emitted seconds to minutes later. This is crucial in the operation of a fission reactor. In uranium-235 fission in a thermal reactor, the proportion of delayed neutrons is about 0.65 percent. If the reactivity stays below the proportion of delayed neutrons, the reactor can be controlled. The delayed neutrons modify the rate of fission sufficiently to give time for the insertion of control rods. Without the margin of safety provided by the delayed neutrons, nuclear reactors might not be practical at all.*
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