Find number abc
[7600] Find number abc - If a7bc7 + c8a3a = 1ab8ac find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 4
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Find number abc

If a7bc7 + c8a3a = 1ab8ac find number abc. Multiple solutions may exist.
Correct answers: 4
#brainteasers #math
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Defective nails...?

Two guys were doing construction on a house. One of them who was nailing down siding would reach into his nail pouch, pull out a nail, and then either toss it over his shoulder or nail it into the siding.

The other guy, figuring this was worth looking into, asked, "Why are you throwing those nails away?"

The first guy explained, "If I pull a nail out of my pouch and it's pointed towards me, I throw it away 'cause it's defective. If it's pointed toward the house, then I nail it into the siding."

The second guy was outraged. He yelled, "You moron! The nails pointed towards you aren't defective! They're for the other side of the house!"

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Donald E. Osterbrock

Died 11 Jan 2007 at age 82 (born 13 Jul 1924).Donald Edward Osterbrock was an American astronomer who was a leading authority on the history of astronomy, and director of the University of California's Lick Observatory. He applied physics to produce accurate models of stars. For example, treating the outer part of the sun as turbulent and convective, he explained the seemingly anomalous fact that the sun's corona is hotter than its surface. He investigated the nature of ionized gas around hot stars, and was a pioneer in the use of spectroscopic methods for the study of gaseous nebulae. He discovered new types of active galactic nuclei, which are powered by black holes in the centers of galaxies. He fostered the construction of the 10-meter Keck Telescopes in Hawaii.«
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