BRAIN TEASERS

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Which is a winning combination of digits?

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: 40

The first user who solved this task is Djordje Timotijevic.

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I was wondering why the ball k...

I was wondering why the ball kept getting bigger and bigger, and then it hit me.

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James Stirling

Died 5 Dec 1770 (born 1692).Scottish mathematician who contributed important advances to the theory of infinite series and infinitesimal calculus. His most important book, Methodus Differentialis (1730), was written while in London. It is a treatise on infinite series, summation, interpolation and quadrature, and the text includes the asymptotic formula for n! for which Stirling is best known. In 1735 he returned to Scotland where he became manager of the 'Scotch mining company, Leadhills'. In 1745 Stirling published a paper on the ventilation of mine shafts.

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