Find number abc
[7300] Find number abc - If 86358 - 2a65b = 6c6bb find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 5
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Find number abc

If 86358 - 2a65b = 6c6bb find number abc. Multiple solutions may exist.
Correct answers: 5
#brainteasers #math
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The Doctor Needs A Wrench

A woman with a minor injury was at the hospital because her doctor said she wanted to take a closer look at it to make sure everything was all right. The woman's husband sits patiently in the waiting room.
After a few minutes, the doctor comes out and asks her assistant for a wrench, which understandably concerns the husband.
Then, after a couple more moments, the doctor re-enters the room, this time asking for a screwdriver. The husband grows worried and begins to pace in circles. Then, a little later, the doctor bursts through the doors screaming for a hammer and at that, the husband, in a state of frenzied fear, runs up and asks, 'Doctor, what the heck is wrong with my wife?'
'I don't know,' replies the flustered doctor, 'I can't get my bag open!'

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Steam percussion rock drill

In 1849, Joseph J. Couch received the first U.S. patent for a steam-powered percussion rock drill (No. 6,237) as “improved machinery for drilling rocks”. It was driven by steam power and acted without need of gravity supplying any part of the motion. A sliding drill support frame enabled it to be operated in any desirable position or direction. Power was supplied by the piston of a steam cylinder connected to a suitable steam generator. The machine would be held stationary as the rotating drill was thrown against the rock. The drill rod would disengaged at each stroke, and travel with its own momentum, so that upon striking the rock, the shock was not transmitted back to the rest of the machine, preventing it from damage. After each blow, the tool was seized by means of friction-grips to retract and repeat.«
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