Calculate the number 6140
[6090] Calculate the number 6140 - NUMBERMANIA: Calculate the number 6140 using numbers [8, 6, 6, 2, 22, 986] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 10 - The first user who solved this task is Nílton Corrêa de Sousa
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Calculate the number 6140

NUMBERMANIA: Calculate the number 6140 using numbers [8, 6, 6, 2, 22, 986] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 10
The first user who solved this task is Nílton Corrêa de Sousa.
#brainteasers #math #numbermania
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The Doctor Needs A Wrench

A woman with a minor injury was at the hospital because her doctor said she wanted to take a closer look at it to make sure everything was all right. The woman's husband sits patiently in the waiting room.
After a few minutes, the doctor comes out and asks her assistant for a wrench, which understandably concerns the husband.
Then, after a couple more moments, the doctor re-enters the room, this time asking for a screwdriver. The husband grows worried and begins to pace in circles. Then, a little later, the doctor bursts through the doors screaming for a hammer and at that, the husband, in a state of frenzied fear, runs up and asks, 'Doctor, what the heck is wrong with my wife?'
'I don't know,' replies the flustered doctor, 'I can't get my bag open!'

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Black American invention

In 1894, Black American inventor Fredrick J. Loudin was issued a U.S. patent for a "Key Fastener" (No.512,308). The invention was a device designed to attach to the knob-shaft or door-handle above the key-hole and fasten the door key in place in the lock by engaging with the eyed-end of the key to keep it from being turned in the lock. As the patent described, this would prevent disengaging the key, as might otherwise be done by a burglar from the outside of the door with some suitable implement, inserted through the key-hole. Loudin's first patent was issued 12 Dec 1892 for a window "Fastener for the Meeting Rails of Sashes" that permitted the window to be locked either closed or partially opened (No. 510,432).
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