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Calculate the number 1968

NUMBERMANIA: Calculate the number 1968 using numbers [3, 8, 6, 3, 78, 509] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 16

The first user who solved this task is Djordje Timotijevic.

#brainteasers #math #numbermania

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Room for fungi

How much room is needed for fungi to grow?

As mushroom as possible.

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Thomas Tompion

Baptized 25 Jul 1639; died 20 Nov 1713 at age 74.Most famous English clockmaker of his time, especially known for watchmaking improvements. He worked closely with experimental physicist Robert Hooke, and in 1675, following Hooke's design, Tompion made one of the first English watches regulated by a balance spring. In 1695, with Edward Barlow and William Houghton, he patented the cylinder escapement (a controlling device) that allowed use of a horizontal wheel, enabling Tompion to make the first of the flat and more compact watches.[Image: Bracket clock with oak case ebony veneer, and gilt bronze mounts by Tompion, c. 1690.]

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