Calculate the number 468
[3824] Calculate the number 468 - NUMBERMANIA: Calculate the number 468 using numbers [6, 5, 7, 1, 78, 290] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 22 - The first user who solved this task is Manguexa Wagle
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Calculate the number 468

NUMBERMANIA: Calculate the number 468 using numbers [6, 5, 7, 1, 78, 290] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 22
The first user who solved this task is Manguexa Wagle.
#brainteasers #math #numbermania
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Some Improvements in Hell

An engineer died and ended up in Hell. Soon, he became dissatisfied with the level of comfort in Hell, and began designing and building improvements. After a while, they had flush toilets, air conditioning, escalators. The engineer was a pretty popular guy.One day God called to Satan and said with a sneer, "So, how's it going down there in Hell?" Satan replied, "Hey, things are great. We've got air conditioning and flush toilets and escalators, and there's no telling what this engineer is going to come up with next."God exclaimed, "What? You've got an engineer? That's a mistake--he should never have gotten down there in the first place. Send him back up here.""No way," replied Satan. "I like having an engineer on the staff, and I'm keeping him."God threatened, "Send him back up here now or I'll sue!"Satan laughed and answered, "Yeah, right. And just where are YOU going to get a lawyer?"
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Mercury boiler electric generator

In 1923, an experimental mercury boiler turbine invented by General Electric began generating about 1,500 kW of electricity at the Hartford Electric Light Company's Dutch Point Station*. It was claimed to be more fuel efficient than steam turbines alone. Boiling mercury (354ºC) needed a smaller fraction of the total heat input than for vaporizing water, and it operated at lower pressure causing less stresses in the pipes. After the mercury vapour drove the first stage of turbines, the exhaust heat from the mercury was used to produce steam for a second stage of steam turbines. By 1947, three full-scale plants had been built, but later conventional steam plant efficiency exceeded the mercury/steam cycle, so the toxic design was abandoned.«[Image: schematic of the mercury and steam circuits for generator.]
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