Calculate the number 841
[8203] Calculate the number 841 - NUMBERMANIA: Calculate the number 841 using numbers [2, 1, 1, 7, 54, 903] 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 841

NUMBERMANIA: Calculate the number 841 using numbers [2, 1, 1, 7, 54, 903] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
#brainteasers #math #numbermania
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Three drunks hailed a taxi...

Three drunks hailed a taxi. The taxi driver seeing that they were so wasted when they got in, he just switched on the engine and switched it off, and said we are here. The 1st guy gave him money, 2nd guy said thanks, but the 3rd guy slapped him. The taxi driver was stunned because he was hoping that none of them would have realized the car didn't move an inch. So what was that for, he asked. Control your speed next time, you almost killed us.
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Francium

In 1930, the element Fr (francium) was discovered, the last naturally occurring element to be found. It is the heaviest alkali metal atom, with atomic number 87. Marguerite Pereyjoined (Oct 1929) the Institut du Radium in Paris in Oct 1929 as a technician for Marie Curie. Perey worked for years on actinium, which was anticpated to produce the new element by alpha decay. Finally, she was able to make thefirst entry about francium in her lab notebook on 7 Jan 1939, recording its half-life as about 20 minutes. A note in the Comptes Rendus was presented at the Académie des Sciences by Jean Perrin (9 Jan 1939). In his periodic table, Mendeleev anticipated its discovery, and provisionally named it eka-cesium. Perey gave it the name “francium.” She first used the symbol Fa, but changed it to Fr.«[Previously on this site as discovered 11 Jan 1930.]
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