Calculate the number 897
[6003] Calculate the number 897 - NUMBERMANIA: Calculate the number 897 using numbers [1, 2, 4, 5, 53, 209] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 19 - The first user who solved this task is Nílton Corrêa De Sousa
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Calculate the number 897

NUMBERMANIA: Calculate the number 897 using numbers [1, 2, 4, 5, 53, 209] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 19
The first user who solved this task is Nílton Corrêa De Sousa.
#brainteasers #math #numbermania
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Barber shop

President George Bush and President Barack Obama ended up at the barbershop at the same time.

As they sat there, each being worked on by a different barber, not a word was spoken.

The barbers were even afraid to start a conversation, for fear it would turn to politics.

As the barbers finished their shaves, the one who had President Bush in his chair reached for the aftershave. President Bush was quick to stop him, saying: “No thanks, my wife will smell that and think I've been in a whorehouse.”

The second barber turned to President Obama and said: “How about you, Mr. President?

Obama replied, “Go ahead, my wife doesn't know what the inside of a whorehouse smells like.”

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Valdemar Poulsen

Born 23 Nov 1869; died 23 Jul 1942 at age 72.Danish engineer who in 1903 developed the first device for generating continuous radio waves, thus aiding the development of radio broadcasting. His arc transmitter increased the frequency range of Duddell's Singing Arc (1900) from the audio range to radio waves, enabling speech to be transmitted up to a radius of 150 miles. By 1920 the Poulsen Arc transmitter was as powerful as 1000kW with ranges of up to 2,500 miles. An earlier invention was the Telegraphone, for which he filed a patent in Denmark on 1 Dec 1898. This was the first device in history to use magnetic sound recording, although this invention remained commercially impractical due to low sound output until the advent of vacuum tube amplifiers in the 1930s.[Biog. Dict. of the Hist. of Tech. gives date of death 23 Jul 1942. DSB and EB give Jul 1942.]
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