Replace the question mark with a number
[4069] Replace the question mark with a number - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 129 - The first user who solved this task is Thinh Ddh
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Replace the question mark with a number

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 129
The first user who solved this task is Thinh Ddh.
#brainteasers #math #riddles
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Petroleum Jelly

One day while doing door-to-door market research, this guy knocks on a door and is greeted by a beautiful young housewife.
"Hello," he starts, "I'm doing some research for a petroleum jelly manufacturer. Have you ever used the product?"
"Yes. My husband and I use it during sex," she answers.
The researcher is taken aback. "Um, er, I admire you for your honesty," he continues. "Can you tell me exactly how you use it?"
"Sure, we put it on the doorknob so the kids can't get in."

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Marmaray tunnel ceremonial test train

In 2013, the Marmaray rail tunnel under the Bosphorus Strait was opened for public travel and over 300,000 people travelled through it, on the 90th anniversary of the Turkish Republic. It is the world's first sea tunnel connecting two continents and the deepest submerged tunnel. A 1.4-km stretch of the tunnel lies 50-m below the seabed. The 13-km project linking Kazliçesme, Turkey in Europe and Ayrılıkçesme in Asia is part of what will be a total 77-km cross-city surburban service above and below ground when construction is finished (set for Jun 2015). A sultan conceived the tunnel idea in 1860, but it was not until 2004 that Turkish Prime Minister Recep Tayyip Erdogan initiated the ambitious project to relieve traffic congestion on the two existing road bridges. He rode a ceremonial test run on 4 Aug 2013.«
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