Find number abc
[6996] Find number abc - If 5a0c2 - ab335 = 6b5b find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 20 - The first user who solved this task is Nasrin 24 T
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Find number abc

If 5a0c2 - ab335 = 6b5b find number abc. Multiple solutions may exist.
Correct answers: 20
The first user who solved this task is Nasrin 24 T.
#brainteasers #math
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Extra Money

This girl needed some money, so she is doing odd-jobs around her neighborhood. She decides she's not making enough money, so she goes to a rich neighborhood. She walks up to this house and rings the doorbell. The guy answers and tells her she can paint the porch. He gives her a can of paint and $25. When he goes inside, his wife says, "$25! Does she know that the porch wraps all the way around the house?"

"Oh, she'll do fine." the guy says.

An hour later, the doorbell rings. It's the girl. She says, "I'm finished. I even had some extra paint, so I put another coat on."

The guy is surprised. Then the girl says, "Oh, and by the way, that's not a Porsche, that's a Ferrari."

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Coal mine canaries retired

In 1986, the BBC reported that the British government planned to replace about 200 canaries used in mining pits with modern electronic gas detectors. From 1987, as new technology was gradually phased in, the birds were retired. Live canaries carried in small cages had been used in pits since 1911 to warn of the presence of carbon monoxide, a deadly but colourless, tasteless and odourless gas. John Scott Haldane researched the practice. A small animal with faster metabolism would be more quickly affected by noxious fumes than a human. Canaries were preferred over, say, mice, because they gave an early warning easier to detect. An affected bird would stop chirping, have trouble breathing, sway on its perch and (with trimmed claws) noticeably fall. (Prompt oxygen could be used revive it, for further use.) Or die.«[Image: miner holding up a canary in a cage.]
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