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: 49

The first user who solved this task is James Lillard.

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Grocery Shopping Danger

Last week at the grocery store, I saw a man slipping celery into other people's shopping carts...
I believe he was a stalker.

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Étienne-François Geoffroy

Died 6 Jan 1731 at age 58 (born 13 Feb 1672).French chemist, who was the first to recognize the relative fixed affinities of reagents for one another. He composed tables (1718) listing the relative affinities of different reagents for particular substances, showing how one acid displaces another acid of weaker affinity for a specific base in the salt of that base. (These tables stood for most of the 18th century, until Claude-Louis Berthollet demonstrated that reactions instead depend upon the initial relative quantities of the reactants and physical conditions during the reaction.) Geoffroy considered the quest for the philosopher's stone (a substance capable of transforming base metals into gold) a delusion, but he believed that iron could be formed during the combustion of vegetable matter.

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