Calculate the number 549
[8196] Calculate the number 549 - NUMBERMANIA: Calculate the number 549 using numbers [1, 1, 7, 9, 73, 461] 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 549

NUMBERMANIA: Calculate the number 549 using numbers [1, 1, 7, 9, 73, 461] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
#brainteasers #math #numbermania
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There is a knock on the pearly...

There is a knock on the pearly gates. Saint Peter looks out, and a man is standing there. Saint Peter is about to begin his interview when the man disappears. A moment later there’s another knock. Saint Peter gets the door, sees the man, opens his mouth to speak, but the man disappears once again. “Hey, are you playing games with me?” Saint Peter calls after him, rather annoyed.
“No” the man’s distant voice replies anxiously.
“They are trying to resuscitate me.”
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Sir Lawrence Bragg

Died 1 Jul 1971 at age 81 (born 31 Mar 1890). William Lawrence Bragg was an Australian-English physicist and X-ray crystallographer who at the early age of 25, shared the Nobel Prize for Physics in 1915 (with his father, Sir William Bragg). Lawrence Bragg formulated the Bragg law of X-ray diffraction, which is fundamental for the determination of crystal structure: nλ = 2dsinθ which relates the wavelength of x-rays, λ, the angle of incidence on a crystal, θ, and the spacing of crystal planes, d, for x-ray diffraction, where n is an integer (1, 2, 3, etc.). Together, the Braggs worked out the crystal structures of a number of substances. Early in this work, they showed that sodium chloride does not have individual molecules in the solid, but is an array of sodium and chloride ions.
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