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# Calculate the number 406

NUMBERMANIA: Calculate the number 406 using numbers [3, 1, 7, 4, 99, 112] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #numbermania

### Difference between hypothetical and reality

A little boy goes up to his father and asks: “Dad, what's the difference between hypothetical and reality?”

The father replies, “Well son, I could give you the book definitions, but I feel it could be best to show you by example. Go upstairs and ask your mother if she'd have sex with the mailman for \$500,000.”

The boy goes and asks his mother: “Mom, would you have sex with the mailman for \$500,000?”

The mother replies, “Hell yes I would!”

The little boy returns to his father. “Dad, she said ‘Hell yes I would!'”

The father then says, “OK, now go and ask your older sister if she'd have sex with her principal for \$500,000.”

The boy asks his sister, “Would you have sex with your principal for \$500,000?”

The sister replies: “Hell yes I would!”

He returns to his father. “Dad, she said ‘Hell yes I would!'”

The father answers, “OK, son, here's the deal: Hypothetically, we're millionaires, but in reality, we're just living with a couple of whores.”

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### Marin Mersenne

Born 8 Sep 1588; died 1 Sep 1648 at age 59. French mathematician, natural philosopher and theologian whose discovery of the Mersenne numbers is considered to have been a pioneering effort to derive a formula that would represent all prime numbers. Although he failed in this, his work on numbers of the form (2 p - 1), where p is prime, has been of continuing interest in the investigation of large primes. Although Mersenne numbers represent only some primes, their formula inspired great advances in the theory of numbers. He continued some of Galileo's work in acoustics and stimulated some of Galileo's own later discoveries. It is through him that Galileo's work became known outside Italy. Mersenne proposed the use of the pendulum as a timing device to Huygens, who first used it in a clock.
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