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Calculate the number 1161

NUMBERMANIA: Calculate the number 1161 using numbers [9, 1, 8, 1, 66, 643] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 12

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

#brainteasers #math #numbermania

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Stop smoking

What the best way to get a guy to stop smoking after sex?

Fill his water bed with gasoline.

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John Boyd Dunlop

Born 5 Feb 1840; died 23 Oct 1921 at age 81.Scottish inventor who was a pioneer of the pneumatic tyre. In 1887, when his 9-yr-old son complained of the rough ride he experienced on his tricycle over the cobbled streets of Belfast. Dunlop devised and fitted rubber air tubes held on to a wooden ring by tacking a linen covering fixed around the wheels. Due to the major improvement in riding comfort, Dunlop continued development, until he patented the idea, issued on 7 Dec 1889 (No. 10607) as "An improvement in Tyres of Wheels for Bicycles, Tricycles or other Road Cars".

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