Calculate the number 258
[5716] Calculate the number 258 - NUMBERMANIA: Calculate the number 258 using numbers [5, 5, 2, 2, 80, 560] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 14 - The first user who solved this task is Djordje Timotijevic
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Calculate the number 258

NUMBERMANIA: Calculate the number 258 using numbers [5, 5, 2, 2, 80, 560] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 14
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #numbermania
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For two solid hours, the lady ...

For two solid hours, the lady sitting next to a man on an airplane had told him about her grandchildren. She had even produced a plastic-foldout photo album of all nine of the children.

She finally realized that she had dominated the entire conversation on her grandchildren.

"Oh, I've done all the talking, and I'm so sorry. I know you certainly have something to say. Please, tell me... what do you think of my grandchildren?"
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Parity conservation disproved

In 1956, the formerly believed “law” of conservation of parity was disproved in the first successful results from an experiment conducted by Madame Chien-Shiung Wu at Columbia University on the beta-decay of cobalt-60. It had been suggested in a paper published by Tsung-Dao Lee and Chen Ning Yang on 1 Oct 1956. There had been problems to overcome working with the cobalt sample and detectors in a vacuum at a working temperature of one-hundredth of a kelvin. Wu's team repeated the experiment, doing maintenance on the apparatus as necessary, until on 9 Jan 1957 further measurements confirmed the initial results. Leon Lederman performed an independent test of parity with Columbia's cyclotron. They held a press conference on 15 Jan 1957.«
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