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How many 5-digit numbers (it...

How many 5-digit numbers (it cannot start with 0) are there that do not contain the numbers 3 and 5, and are multiples of 4?

Correct answers: 23

The first user who solved this task is Manguexa Wagle.

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What did the digital clock...

Q. What did the digital clock say to the analog clock?
A. Look, No hands!

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Enrico Barone

Born 22 Dec 1859; died 14 May 1924 at age 64.Italian mathematical economist who built on the general equilibrium theory of Léon Walras and was instrumental in convincing Walras to incorporate variable production techniques - and, by extension, marginal productivity theory - into the Walras theory. Barone's greatest contribution was in getting the "Socialist Calculation" debate started with his famous 1908 article. His position was that it was indeed possible in a collectivist state for a planning agency to calculate prices for maximum efficiency. He was the first to apply indifference curve analysis to compare the relative burdens of income taxes and excise taxes (1912). He opposed "progressive" taxation schemes as based on dubious utilitarian calculations.«

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