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Find number abc

If a3554 - c58c3 = 4bb4c find number abc. Multiple solutions may exist.

Correct answers: 2

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Diagnosis

The man told his doctor that he wasn't able to do all the things around the house that he used to do. When the examination was complete, he said, "Now, Doc, I can take it. Tell me in plain English what is wrong with me."

"Well, in plain English," the doctor replied, "you're just lazy."

"Okay," said the man. "Now give me the medical term so I can tell my wife."

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Roller Coaster

In 1898, the loop-de-loop Roller Coaster having a section of vertical circular spiral track was patented by Edwin Prescott (U.S. No. 609164). He described how “due to centrifugal action, the contents of the car remains securely in place and the car follows the track.” The axles of the car’s wheels had the essential ability to pivot slightly on the car frame in both horizontal and vertical directions to closely follow the horizontal and vertical curves of the track. For safety, he provided additional wheels on the opposite side of the main rail with their own safety track to prevent the car from leaving the main track, even if the car was inverted while travelling with insufficient centrifugal force. An elevator chain moved the car from a passenger-station on the ground, up to a much higher section of track as the starting point.«

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