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Calculate the number 3538

NUMBERMANIA: Calculate the number 3538 using numbers [4, 3, 1, 4, 68, 641] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 1

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During their silver anniversar...

During their silver anniversary, a wife reminded her husband: "Do you remember when you proposed to me, I was so overwhelmed that I didn't talk for an hour?"
The husband replied: "Yes, honey, that was the happiest hour of my life."

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Charles Willson Peale

Born 15 Apr 1741; died 22 Feb 1827 at age 85.American artist and naturalist who opened the first U.S. popular Museum of Natural Science and Art. Alongside fame as a portraitist, Peale maintained a diverse interest in science. He used a physiognotrace machine used to record profiles and make silhouettes. He patented a fireplace, porcelain false teeth, and a new kind of wooden bridge. He invented a technique to put motion with pictures and wrote papers on engineering and hygiene. He perfected a kind of portable writing desk, named the polygraph, which reproduced several copies of a manuscript at once. In 1786, he established the first U.S. scientific museum with both living and stuffed specimens, and later a complete mastodon skeleton he helped excavate (1801).«

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