Find number abc
[7821] Find number abc - If 6cba7 - a8779 = bb6c8 find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 1
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Find number abc

If 6cba7 - a8779 = bb6c8 find number abc. Multiple solutions may exist.
Correct answers: 1
#brainteasers #math
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Writing letters to son

The following is supposedly a true story. To be included, besides being true, the story is most likely strange, weird, surprising, or funny.

One student fell into a cycle of classes, studying, working and sleeping.

Didn't realize how long he had neglected writing home until he received the following note:

"Dear Son, Your mother and I enjoyed your last letter. Of course, we were much younger then, and more impressionable. Love, Dad."

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Quasar

In 1962, a lunar occultation on August 5 enabled Australian radio astronomers to more precisely fix the location of the previously known radio source 3C 273, in Virgo. In 1963 this became the first member of a new class of object eventually to be called quasars or "quasi-stellar radio sources." Maarten Schmidt, using the Hale optical telescope, saw it as a faint star-like object with a visible jet. Its spectrum featured unusual emission lines, which he identified as ordinary hydrogen lines shifted toward longer wavelengths (redshifted) by 16%. If the shift is due to velocity, it is moving away at one-sixth the speed of light and one of the most distant objects visible. Quasars radiate as much energy per second as a hundred or more galaxies. 3C273 is the brightest quasar known.
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