Calculate the number 731
[8168] Calculate the number 731 - NUMBERMANIA: Calculate the number 731 using numbers [6, 1, 9, 7, 28, 520] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 0
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Calculate the number 731

NUMBERMANIA: Calculate the number 731 using numbers [6, 1, 9, 7, 28, 520] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
#brainteasers #math #numbermania
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3 spies are captured and imprisoned...

An american, a russian, and an italian.

The guards come for the american, bind his hands and drag him off. The other 2 hear his screams for sn hour, then nothing. In another hour the guards drag him back in, cut his bonds and dump him on a bunk. "All my training was for nothing, i told them everything."

They take the russian bind his ha ds and drag him out. And for 4 hours the others hear screaming, then nothing. In Another hour, the guards drag the russian back in, cut him loose crying. I yhought after a life in rusdia i had suffered the worst but it was nothing compared to what they did. I told them everything.

The guards then took the italian, bound him, and dragged him out. All day, and all night the others listen to his screams. After what seemed like forever the guards dragged the italian back in, cut him loose and dump him.

The russian says"you must be the toughest man on earth!"

The american says "how did you not break?"

The italian says, "i wanted to, i tried to tell them everything. But they wouldn't untie my hands!!!

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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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