Calculate the number 3189
[2996] Calculate the number 3189 - NUMBERMANIA: Calculate the number 3189 using numbers [3, 4, 9, 6, 52, 913] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 30 - The first user who solved this task is Djordje Timotijevic
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Calculate the number 3189

NUMBERMANIA: Calculate the number 3189 using numbers [3, 4, 9, 6, 52, 913] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 30
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #numbermania
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There were three little boys v...

There were three little boys visiting their grandparents.
The oldest came out and asked his grandpa, "Can you make a sound like a frog, Grandpappy?
Grandpa (being in a kind of ill mood) responds, "No, I don't really want to make the sound of a frog now."
So, the second little boy comes out and asks his grandfather, "Will you please make a sound like a frog?"
Grandpa again says, "No, not now. I don't really want to do that.I'm in a grumpy mood. Maybe later."
Then the third little boy comes out and says, "Grandpa, oh please...Please, please will you make a sound like a frog?"
"Why do all of you boys want me to make a sound like a frog?" Grandpa asked.
The little boy replied with a hopeful face, "Well, Mom said that when you croak, we get to go to Disney World!"
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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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