Find number abc
[5436] Find number abc - If ab9a9 - 27a01 = 7ca8 find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 41 - The first user who solved this task is Djordje Timotijevic
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Find number abc

If ab9a9 - 27a01 = 7ca8 find number abc. Multiple solutions may exist.
Correct answers: 41
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math
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Greeting Card Quest

A little boy had been pawing over the stock of greeting cards at a stationery store.
After a few minutes the clerk became curious and asked, "Just what is it you're looking for, sonny? Birthday greeting? Message to a sick friend? Anniversary congratulations to your mom and dad?"
The boy shook his head, "No."
"Then what kind of card is it that you want?" asked the clerk.
The boy answered wistfully, "Got anything in the line of blank report cards?"

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Jeremiah Horrocks

Died 13 Jan 1641 (born 1618).English astronomer and clergyman who applied Johannes Kepler's laws of planetary motion to observations of the Moon and Venus. Once Horrocks managed to obtain a small telescope, his observations convinced him that Lansberg's tables were incorrect. He accepted Kepler's elliptical orbits, and in working on the moon he applied an elliptical orbit to it and established that the line of apsides precessed, an effect which he ascribed to the influence of the sun. Horrocks predicted and observed a transit of Venus on 24 Nov 1639, the first one ever observed, and from the observation he corrected the solar parallax, indicating a much greater distance of the sun than anyone before him had admitted. He died at age only 22.[DSB gives dates as 1618 - 13 Jan 1641. EB gives 1617 - 3 Jan 1641.]
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