Calculate the number 721
[6555] Calculate the number 721 - NUMBERMANIA: Calculate the number 721 using numbers [2, 4, 2, 7, 49, 231] 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 721

NUMBERMANIA: Calculate the number 721 using numbers [2, 4, 2, 7, 49, 231] 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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A man in a hot air balloon rea...

A man in a hot air balloon realized he was lost. He reduced altitude and spotted a woman below. He descended a bit more and shouted, "Excuse me, can you help? I promised a friend I would meet him an hour ago, but I don't know where I am." The woman below replied, "You are in a hot air balloon hovering approximately 30 feet above the ground. You are between 40 and 41 degrees north latitude and between 59 and 60 degrees west longitude."
"You must be an engineer," said the balloonist.
"I am," replied the woman, "How did you know?"
"Well," answered the balloonist, "everything you told me is, technically correct, but I have no idea what to make of your information, and the fact is I am still lost. Frankly, you've not been much help so far."
The woman below responded, "You must be in Management."
"I am," replied the balloonist, "but how did you know?"
"Well," said the woman, "you don't know where you are or where you are going. You have risen to where you are, due to a large quantity of hot air. You made a promise which you have no idea how to keep, and you expect people beneath you to solve your problems. The fact is you are in exactly the same position you were in before we met, but now, somehow, it's my fault."
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U.S. iron mill

In 1817, the first U.S. mill to roll and puddle iron was opened. Plumstock Rolling Mill, built by pioneer ironmaster Isaac Meason (15 Aug 1743 - 23 Jan 1818), stood at Redstone Creek, Pennsylvania. A puddling furnace reduces the carbon content in cast iron to produce malleable iron. The mill produced wrought iron by roll milling rather than than hammer forging. It was destroyed by floods in 1824. Meason had led the iron and steel industry since 1791 when he establishing the first commercially successful iron furnace and forge west of the Alleghenies. A rich man, he eventually owned 20,000 acres of land, six iron furnaces, toll ferries and bridges, two sawmills, grist mills, the entire town of New Haven and property in Kentucky.«[Image: Isaac Meason commissioned architect Adam Wilson to build his Georgian-style mansion (1802), which is now a National Historic Landmark.]
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