Find number abc
[8100] Find number abc - If 5ac8b - bab74 = a0708 find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 0
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Find number abc

If 5ac8b - bab74 = a0708 find number abc. Multiple solutions may exist.
Correct answers: 0
#brainteasers #math
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During a training session at a...

During a training session at an artillery unit the sergeant-major was busy describing how the sophisticated aiming device of the artillery weapon system is used:
"As you all know, there are 180 degrees in a circle."
One of the soldiers put up his hand and said: "But there are 360 degrees in a circle, sergeant-major."
"You idiot," replied the sergeant-major, "I am obviously speaking about a small circle!"
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Safety lamp

In 1816, Sir Humphry Davy's safety lamp was first used in a coal mine. Deadly explosions had been a continual hazard caused by the flammable gas, methane, leaking out of the coal seams ignited by the flame of a miner's lamp. There had been previous attempts by others to make a safety lantern. Davy applied a scientific approach to determine the suitable fineness of wire gauze placed around the flame which would avoid ignition of flammable gas outside. He determined that the holes in the gauze should be less than 1/22 inch in diameter, and that the wire itself should be between 1/40 to 1/60 inch thick. Since the flame changed colour in the presence of methane, it also served as a warning to the miner to take protective action.«[Image: Davy safety lamp, circa 1816.]
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