Calculate the number 4730
[6987] Calculate the number 4730 - NUMBERMANIA: Calculate the number 4730 using numbers [3, 2, 7, 8, 19, 917] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 10 - The first user who solved this task is Nasrin 24 T
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Calculate the number 4730

NUMBERMANIA: Calculate the number 4730 using numbers [3, 2, 7, 8, 19, 917] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 10
The first user who solved this task is Nasrin 24 T.
#brainteasers #math #numbermania
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Lumberyard

Jon's working at the lumberyard, pushing a tree through the buzz saw, and accidentally shears off all ten of his fingers. He goes to the emergency room.
The doctor says, "Yuck! Well, give me the fingers, and I'll see what I can do."
Jon says, "I haven't got the fingers."
The doctor says, "What do you mean, you haven't got the fingers? It's 1999. We've got microsurgery and all kinds of incredible techniques. I could have put them back on and made you like new. Why didn't you bring the fingers?"
Jon says, "Well, sh*t, Doc, I couldn't pick 'em up."    

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Catalysis

In 1823, the effect of platinum as a catalyst was investigated by Johann Wolfgang Döbereiner, who found that hydrogen combined with air in the presence of platinum powder to form water, in a reacttion so vigorous that the filter paper holding the powder was charred. (It was later that the term catalysis was coined by Berzelius, in 1835.) Within a few days, on 3 Aug 1823, he invented the Döbereiner lighter process using the effect he had observed. He ignited a thin jet of hydrogen by passing it over spongy platinum in air. He designed a jar-type lighter using this method. Within three months, news of his discovery had been reported in some dozen European science journals. His lighter design was taken up by manufacturers to replace starting a fire with flint and tinder, and was in production for several decades.«
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