Calculate A+B
[734] Calculate A+B - Determine the pattern and calculate A+B. Author: Dejan Marsenic (Serbia) - #brainteasers #math - Correct Answers: 39 - The first user who solved this task is Sanja Šabović
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Calculate A+B

Determine the pattern and calculate A+B. Author: Dejan Marsenic (Serbia)
Correct answers: 39
The first user who solved this task is Sanja Šabović.
#brainteasers #math
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Every Friday after work, a mat...

Every Friday after work, a mathematician goes down to the Ice Cream Parlor, sits in the second-to-last seat, turns to the last seat, which is empty, and asks a girl, who isn't there, if he can buy her an ice cream cone.
The owner, who is used to the weird, local university types, always shrugs but keeps quiet. But when Valentine's Day arrives, and the mathematician makes a particularly heart wrenching plea into empty space, curiosity gets the better of him, and he says, "I apologize for my stupid questions, but surely you know there is never a woman sitting in that last stool, man. Why do you persist in talking to empty space?"
The mathematician replies, "Well, according to quantum physics, empty space is never truly empty. Virtual particles come into existence and vanish all the time. You never know when the proper wave function will collapse and a girl might suddenly appear there."
The owner raises his eyebrows. "Really? Interesting. But couldn't you just ask one of the girls who comes here every Friday if you could buy HER a cone? You never know... she might say yes."
The mathematician laughs. "Yeah, right. How likely is THAT to happen?"
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First genetically engineered vaccine

In 1981, the first genetically engineered vaccine was announced: the first effective subunit vaccine for any animal or human disease using gene splicing. It was designed to prevent hoof and mouth disease (FMD). The work was done by the U.S. Dept of Agriculture scientists who by 1975 had discovered that injection of VP3 (a protein derived from a portion of the coating of FMD virus) confers immunity to the disease. In 1980, the USDA team turned to recombinant DNA technology, and collaborated with scientists from Genentech, a private company. They inserted a bioengineered plasmid containing the gene for VP3 into Escherichia coli bacteria which grew obeying orders from the guest DNA, mass-producing the VP3 proteins for the vaccine.
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