Find number abc
[7178] Find number abc - If 474ca + 2b8cc = 7422b find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 13
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Find number abc

If 474ca + 2b8cc = 7422b find number abc. Multiple solutions may exist.
Correct answers: 13
#brainteasers #math
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Arrived safely

Mr. Johnson, a businessman from Wisconsin, went on a business trip to Louisiana. He immediately sent an e-mail back home to his wife, Jennifer to let her know he had arrived safely.

Unfortunately, he miss typed a letter and the e-mail ended up going to a Mrs. Joan Johnson, the wife of a preacher who had just passed away.

The preacher's wife took one look at the e-mail and promptly fainted. When she was finally revived, she nervously pointed to the message, which read: "Arrived safely, but it sure is hot down here."

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First U.S. traffic tunnel under a river

In 1866, work began on the first traffic tunnel under a U.S. river, the Washington Street Tunnel in Chicago, Illinois, under the Chicago River. It was built to alleviate traffic congestion at the river's swing bridges and opened 1 Jan 1869. It had a total length of 1,605-ft including approaches. It had a double arch with two roadways 13-ft wide by 11-ft high, and a separate footway on one side 10-ft wide by 10-ft high, reached by stairs. Cable car companies used the tunnel from the 1880's to 1906. To give a deeper draft to the river, it was replaced with a deeper tunnel in 1900, through which electric streetcar service began in 1911-12. The tunnel was closed in 1953. The world's first tunnel under a waterway was the Thames Tunnel, London, opened on 25 Mar 1843.«[Image: Washington Street Tunnel from an undated stereo viewer card.]
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