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Calculate the number 2430

NUMBERMANIA: Calculate the number 2430 using numbers [7, 1, 3, 7, 23, 284] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 14

The first user who solved this task is Nasrin 24 T.

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A husband and wife are in chur...

A husband and wife are in church. The preacher notices that the husband has fallen asleep and says to the wife, “Wake your husband up!” The wife answers, “You're the one who made him fall asleep, you wake him up!”

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US bird sanctuary

In 1903, the first U.S. national wild life refuge, was established with an Executive Order by President Theodore Roosevelt. This created a bird sanctuary for the nesting colony of pelicans and herons of the 5.5-acre Pelican Island, Indian River, east of Orlando, on the central Atlantic coast of Florida. In 1859, there were thousands of herons, egrets, pelican, ibises and spoonbills. But, they were so heavily slaughtered for their plumage used in women's fashion, that by 1903 only brown pelicans were left. The island was “reserved and set aside ... as a preserve and breeding ground for native birds.” Conservationist Paul Kroegel was made first Game Warden. Yet in Spring 1918, commercial fishermen killed more hundreds of pelican chicks, wrongly believing pelicans reduced the fish population. Since 1943, the island land area has halved, eroded by watercraft traffic, but the bird diversity has improved.«

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