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Calculate the number 566

NUMBERMANIA: Calculate the number 566 using numbers [5, 8, 3, 9, 11, 539] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 32

The first user who solved this task is Eugenio G. F. de Kereki.

#brainteasers #math #numbermania

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A man had just bought a parrot...

A man had just bought a parrot at an auction after some very spirited bidding.
"I suppose that bird talks?" he said to the auctioneer.
"Talks!" was the reply. "Who do you think was bidding against you?"

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Donald Forsha Jones

Born 16 Apr 1890; died 19 Jun 1963 at age 73.American geneticist and agronomist whose hybridization methods for corn (maize) enabled an agricultural revolution. Prior methods of single-cross hybridization had disappointing results. In 1917, he invented the double-cross method of hybrid seed production, which solved a problem in producing useful strains that were uniform, true-breeding, while still vigorous and able to give greater yield. Earlier researchers obtained "pure lines" from self-pollination to eliminate the variable results of open-pollinated seeds, then investigated single crosses made between two such pure lines. For double-cross hybrids, Jones used two single-cross strains. By 1959, more than 95% of U.S. corn crops used hybrid seeds, producing twice the yield of 1929.«

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