Find number abc
[5739] Find number abc - If ca0aa - b8b70 = 486a find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 35 - The first user who solved this task is Djordje Timotijevic
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Find number abc

If ca0aa - b8b70 = 486a find number abc. Multiple solutions may exist.
Correct answers: 35
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math
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Three older ladies...

Three older ladies were discussing the travails of getting older.

One said, "Sometimes I catch myself with a jar of mayonnaise in my hand, in front of the refrigerator, and I can't remember whether I was taking it out or putting it away."

The second lady said, "Yes, sometimes I find myself on the landing of the stairs, and I can't remember whether I was on my up, or on my way down."

The third lady chimed in, "Well, I'm glad I don't have those problems. Knock on wood." With that, she rapped her knuckles on the table, then said, "That must be the door. I'll get it."

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Electric race-track amusement patent

In 1899, black American inventor, Granville T. Woods was issued a U.S. patent for an "Amusement Apparatus" (No. 639,692). Woods, as the most prolific African-American inventor of the late 19th and early 20th centuries, has been called the black Edison. His numerous inventions included a steam-boiler furnace, telephone, telegraph system, electric railway and automatic air brake for railroad safety. This patent design was for small scale or large scale electrically-driven cars on a closed track, such as a figure-8 layout . If carrying persons, Woods claimed that it was suitable for amusement "use at summer and other resorts, at fairs, &c., and in or out of doors." The track could cross at different levels, or on the same level.«
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