Calculate the number 709
[8165] Calculate the number 709 - NUMBERMANIA: Calculate the number 709 using numbers [7, 5, 5, 1, 25, 290] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 0
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Calculate the number 709

NUMBERMANIA: Calculate the number 709 using numbers [7, 5, 5, 1, 25, 290] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
#brainteasers #math #numbermania
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Who is the Boss?

A guy is doing some handyman work at a house. Across the room is a large gray parrot on a perch. The family dog comes into the room and jumps up on the couch. The parrot says, “Get off the couch!” and the dog jumps down immediately.
A small child comes into the room with toys and the parrot says, “Go to your room!” and the child picks up his toys leaves without hesitation.
The guy turns to the parrot and says, “I’ve never seen anything like that before.'
The parrot looks at the guy and says, “Get back to work!”

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Photography

In 1839, Sir John Herschel referred to “photography” in a lecture to the Royal Society—possibly the first use of the word. Following Henry Fox Talbot's publication of his invention of what became known as the Calotype process, a number of scientific men made their own investigations, including not only Herschel but also Berard, Robert Hunt and Draper. Herschel used the name Chrysotype (from the Greek word for gold) for his process. It used paper washed in a solution of ammonio-citrate of iron and brought out the image with a solution of soda or chloride of gold, or with nitrate of silver, and fixing it in the first case by washing it with iodide of potassium and in the second, with hyposulphite of soda. It had technical difficulties in controlling the contrast, colour and fogging of the image.«*
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