BRAIN TEASERS

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What a winning 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: 26

The first user who solved this task is Nasrin 24 T.

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Pregnant for Two Years

"Mary, if you were a four legged animal and you were pregnant for two years, what would you give birth to?"
"I don't know," said Mary, "but whatever it is, it would never be afraid of the dark."

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Jesse L. Greenstein

Died 21 Oct 2002 at age 93 (born 15 Oct 1909). Jesse Leonard Greenstein was an American astronomer who co-discovered quasars. His interest in astronomy began at age 8 when his grandfather gave him a brass telescope. By age 16, he was a student at Harvard University. After earning his Ph.D.(1937), he joined the Yerkes Observatory under Otto Struve. Thereafter, he spent most of his career at the California Institute of Technology. He measured the composition of stars, through which he found less heavy elements in the stars of globular clusters, thus proving they are younger than our Sun. In 1963, he and Maarten Schmidt were the first to interpret the red shift of quasars and correctly describe their nature as compact, very distant and thus very old objects. With Louis Henyey he designed and constructed a new spectrograph and wide-view camera to improve astronomical observations.«

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