What is the 4 digit number i...
[4005] What is the 4 digit number i... - What is the 4 digit number in which the first digit is one-fifth of the last, and the second and third digits are the last digit multiplied by 3? - #brainteasers #math #riddles - Correct Answers: 72 - The first user who solved this task is Djordje Timotijevic
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What is the 4 digit number i...

What is the 4 digit number in which the first digit is one-fifth of the last, and the second and third digits are the last digit multiplied by 3?
Correct answers: 72
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #riddles
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Harmonica

"Thanks for the harmonica you gave me for Christmas," little Joshua said to his uncle the first time he saw him after the holidays. "It's the best present I ever got."

"That's great," said his uncle. "Do you know how to play it?"

"Oh, I don't play it," the little fellow said. "My mom gives me a dollar a day not to play it during the day and my dad gives me five dollars a week not to play it at night.

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Stephen Cole Kleene

Born 5 Jan 1909; died 25 Jan 1994 at age 85.American mathematician and logician whose research was on the theory of algorithms and recursive functions. He developed the field of recursion theory with Church, Gödel, Turing and others. He contributed to mathematical Intuitionism which had been founded by Brouwer. His work on recursion theory helped to provide the foundations of theoretical computer science. By providing methods of determining which problems are soluble, Kleene's work led to the study of which functions can be computed.
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