BRAIN TEASERS

# Calculate 77+66+68

FUNNY MATH: Calculate 77+66+68 :)
The first user who solved this task is Sanja Šabović.
#brainteasers #math

### Two aliens landed in the Arizo...

Two aliens landed in the Arizona desert near a gas station that wasclosed for the night. They approached one of the gas pumps and the youngeralien addressed it saying, 'Greetings, Earthling. We come in peace. Take us to your leader.'
The gas pump, of course, didn't respond.
The younger alien became angry at the lack of response.
The older alien said, 'I'd calm down if I were you.'
The younger alien ignored the warning and repeated his greeting. Again, there was no response.
Annoyed by what he perceived to be the pump's haughty attitude, he drew his ray gun and said impatiently, 'Greetings, Earthling. We come inpeace. Do not ignore us this way! Take us to your leader or I will fire!'
The older alien again warned his comrade saying, 'You probably don'twant to do that! I really don't think you should make him mad.'
'Rubbish,' replied the cocky, young alien. He aimed his weapon at thepump and opened fire. There was a huge explosion. A massive fireball roared towards them and blew the younger alien off his feet and deposited him a burnt, smoking mess about 200 yards away in a cactus patch.
Half an hour passed. When he finally regained consciousness, he refocused his three eyes, straightened his bent antenna, and looked dazedly at the older, wiser alien who was standing over him shaking his big, green head.
'What a ferocious creature!' exclaimed the young, fried alien. 'He damn near killed me! How did you know he was so dangerous?'
The older alien leaned over, placed a friendly feeler on his crispyfriend and replied, 'If there's one thing I've learned during my intergalactic travels, you don't want to mess with a guy who can loop his pen*sover his shoulder twice and then stick it in his ear.'
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### Comet spectrum

In 1881, Sir William Huggins made the first photographicspectrumthe first photographic spectrum of a comet (1881 III) and discovered the cyanogen (CN) emission at violet wavelengths. (This fact caused near mass hysteria 29 years later as the Earth passed thru the tail of Halley's Comet and some persons worried about the effect of this for life on Earth.) The first spectroscopic observations of comets were made made by Giovanni Donati (1864) and by Huggins in 1868 when he visually compared the spectrum of comet Winnecke (1868 II) with flame spectra and found that the bands seen in the comet and in the flame, now known as the “carbon”or “Swan Bands”were similar. Spectroscopy soon became the standard technique for studying the light of comets.[Ref: W. Huggins, "Preliminary Note on the Photographic Spectrum of Comet b, 1881," Proceedings of the Royal Society 33 (1881): 1-3.]
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