BRAIN TEASERS

Monthly Archive - July 2015 (page 3)

brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 21 to 30.

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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: 87

The first user who solved this task is Irena Katic Kuzmanovic.

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Thomas Hancock

Born 8 May 1786; died 26 Mar 1865 at age 78.English inventor and manufacturer who founded the British rubber industry. His chief invention, the "masticator," worked rubber scraps into a shredded mass of rubber that could be formed into blocks or rolled into sheets. This process, perfected in 1821, led to a partnership with the Scottish chemist, Charles Macintosh, inventor and manufacturer of waterproof rubber impregnated fabric. Hancock established the first English rubber factory in 1820 and supplied Macintosh. The process of vulcanization was discovered (1839) independently by Hancock and an American, Charles Goodyear. That made possible a resilient rubber product, and led eventually to the large-scale usage of rubber in bicycle and automobile tires.

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