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: 59

The first user who solved this task is Sanja Šabović.

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What do you call a belt made out of hundred dollar bills?

A waist of money.

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Waldemar Haffkine

Died 25 Oct 1930 at age 70 (born 15 Mar 1860).Waldemar Mordecai Wolfe Haffkine was a Russian-British bacteriologist whoworkedto reduce deaths by cholera. He worked under Émile Roux at the Pasteur Institute in Paris, taking a particular interest in cholera, since epidemics were frequent in Europe. In 1892, he prepared an attenuated strain of cholera culture. He believed in its safely and he tested it on himself after self-injecting a concentrated strain. In 1893, he went to India, where he inoculated 45,000 people to protect them against endemic cholera, despite difficult working conditions, a suspicious population, even with opposition from British medical officials. He reduced the death rate by 70% among those inoculated. He also attempted to produce a vaccine against the plague.

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