Calculate the number 2140
[3799] Calculate the number 2140 - NUMBERMANIA: Calculate the number 2140 using numbers [1, 5, 8, 9, 69, 443] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 23 - The first user who solved this task is Rutu Raj
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Calculate the number 2140

NUMBERMANIA: Calculate the number 2140 using numbers [1, 5, 8, 9, 69, 443] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 23
The first user who solved this task is Rutu Raj.
#brainteasers #math #numbermania
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A doctor and his wife were sun...

A doctor and his wife were sunbathing on a beach when a well-endowed, beautiful, young, blonde woman in a tight-fitting bikini strolled passed. The woman looked at the doctor, smiled seductively, and said in a very sexy voice, "Hi there handsome. How are you doing?" before wiggling her backside and walking off.
"Who was that?" demanded the doctor's wife.
"Just a woman I met professionally," replied the doctor.
"Oh yeah?" snarled his wife, "In whose profession? Yours or hers?"
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Black American patent

In 1897, a U.S. patent for an improvement in "Casting Composite or Other Wheels" was issued to black American inventor E.R. Robinson (No. 594,286). It gave a method for casting wheels wherein the outer sides are of one metal and the interior portions are of another metal. The importance was not only to enable casting a metal of high electrical conductivity, such as brass, in a groove of an iron trolley wheel - but also to permit an entirely new contruction consisting of two outer disks or flanges and an intermediate, uniting portion, which extends from the contact portion of the wheel with a web extending to the centre and an integral bushing. Robinson also held a previous patent, issued four years earlier, for an "electric railway trolley."[Image: plan view of bottom section of a wheel three-part mold]
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