Find number abc
[7391] Find number abc - If a2b5c - 60081 = 128a3 find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 5
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Find number abc

If a2b5c - 60081 = 128a3 find number abc. Multiple solutions may exist.
Correct answers: 5
#brainteasers #math
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A mathematician, a physicist...

A mathematician, a physicist, and an engineer are all given identical rubber balls and told to find the volume. They are given any tools they want, and have all the time they need.
The mathematician uses a measuring tape to record the circumference. He then divides by two times pi to get the radius, cubes that, multiplies by pi again, and then multiplies by four-thirds and thereby calculates the volume.
The physicist gets a bucket of water, places 1.000000 gallons of water in the bucket, drops in the ball and measures the displacement to six significant figures.
The engineer writes down the serial number of the ball and looks it up online.
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Mount Washington Cog Railway

In 1866, a public demonstration was given of the first cog railway in the world to show the first half-mile of track at the base of Mount Washington, the highest peak in the Northeast U.S. The Mount Washington Cog Railway eventually ran to the summit of Mount Washington, N.H. giving views of four states, Canada, and the Atlantic Ocean. Invented by Sylvester Marsh of Littleton, N.H., work began on the railway in May 1866 and finished in July 1869 at a cost of $139,500. In 1869, the Cog Railway was an engineering marvel, a new technology of toothed cog gears, rack rails and tilted boilers. A third toothed rail was laid between the steel rails for the wheels. In the present day, it remains in use, the only cog railway still powered by steam.
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