Find number abc
[5708] Find number abc - If 9ac6a - 20ab5 = bc889 find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 42 - The first user who solved this task is Djordje Timotijevic
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Find number abc

If 9ac6a - 20ab5 = bc889 find number abc. Multiple solutions may exist.
Correct answers: 42
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math
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Frugal...

Mary's fourth grade homework assignment was to make sentences using the words in her spelling list, along with the definition. Coming across the word "frugal" in the list, she asked her father what it meant.

He explained that being frugal meant you saved something.

Her paper read: "Frugal: to save."

Sentence: "Maid Marion fell into a pit when she went walking in the woods so she yelled for someone to come get her out. She yelled 'Frugal me, Frugal me!'"

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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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