BRAIN TEASERS

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Find the right combination

The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.

Correct answers: 50

The first user who solved this task is James Lillard.

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Two men were talking...

Two men were talking. "So, how's your sex life?"
"Oh, nothing special. I'm having Social Security sex."
"Social Security sex?"
"Yeah, you know; I get a little each month, but not enough to live on!"

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Polio vaccine

In 1961, the American Medical Association backed the Sabin polio vaccine over the Salk vaccine. In 1957, in an effort to improve upon the killed Salk vaccine, Albert Bruce Sabin began testing a live, oral form of vaccine in which the infectious part of the virus was inactivated (attenuated). This vaccine became available for use in 1963. The Sabin oral vaccine is often administered on a sugar cube. The advantages of a live, oral vaccine are its long-lasting immunity, and the lower cost because sterile syringes and needles are not necessary. A major disadvantage is that it cannot be used for patients with compromised immune systems because it is a live virus and can cause disease in these patients.

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