Calculate the number 250
[799] Calculate the number 250 - NUMBERMANIA: Calculate the number 250 using numbers [2, 5, 1, 7, 57, 138] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 37 - The first user who solved this task is Sanja Šabović
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Calculate the number 250

NUMBERMANIA: Calculate the number 250 using numbers [2, 5, 1, 7, 57, 138] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 37
The first user who solved this task is Sanja Šabović.
#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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Isaac Roberts

Died 17 Jul 1904 at age 75 (born 27 Jan 1829).Welsh astronomer who was a pioneer in photography of nebulae. In 1885 he had built an observatory with a 20 inch reflector. Using this instrument Roberts was to make considerable progress in the newly developing science of Astro-photography. He photographed numerous celestial objects including Orion Nebula on 15 Jan 1986 (90 minute exposure) and Pleiades. Undoubtedly his finest work was a photograph showing the spiral structure of the Great Nebula in Andromeda, M31 on 29 Dec 1888. In addition to his contribution to astro-photography, Roberts also devised a machine to be used to engrave stellar positions on copper plates, known as the Stellar Pantograver. He was also a geologist of some considerable note.
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