Calculate product...
[1731] Calculate product... - Calculate product of four consecutive prime numbers with the sum of 220. - #brainteasers #math - Correct Answers: 53 - The first user who solved this task is Sanja Šabović
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Calculate product...

Calculate product of four consecutive prime numbers with the sum of 220.
Correct answers: 53
The first user who solved this task is Sanja Šabović.
#brainteasers #math
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Park Bench

Grandpa and Little Johnny are sitting on a bench in the park. Johnny asked, "Grandpa are you going to take that new Viagra?"
Grandpa looks at him and says, "No Johnny, I will not."
"But Grandpa, why?" asks little Johnny.
Grandpa replies, "Because there is no sense in putting lead in your pencil if you have no one to write to."  

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US photo studio

In 1840, the world's first commercial photography studio was opened in New York City by John Johnson and Alexander S. Wolcott. On 6 Oct 1839, Johnson had taken to Wolcott's residence a full description of Daguerre's discovery. That afternoon they worked to produce a camera and plates. The same day, they exposed and processed their first Daguerreotypes. Johnson later wrote that they ended the day "little dreaming or knowing into what a labyrinth such a beginning was hastening us." Over the next few months, they experimented in various aspects of the construction of the camera, lighting, and using persons as subjects. By 8 May 1840, Wolcott had patented a camera using a mirror reflector to correct the reversed image from the usual single lens.
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