Find number abc
[7143] Find number abc - If b1aaa + b3a53 = 18ca53 find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 10
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Find number abc

If b1aaa + b3a53 = 18ca53 find number abc. Multiple solutions may exist.
Correct answers: 10
#brainteasers #math
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Smart kid

Bill and Marla decided that the only way to pull off a Sunday afternoon quickie with their ten-year-old son in the apartment was to send him out on the balcony and tell him to report on all the neighborhood activities.

The boy began his commentary as his parents put their plan into operation. "There's a car being towed from the parking lot," he said. "An ambulance just drove by." A few moments passed.

"Looks like the Andersons have company," he called out. "Matt's riding a new bike, and the Coopers are having sex."

Mom and Dad shot up in bed. "How do you know that?" the startled father asked.

"Their kid is standing out on the balcony too," his son replied.

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Simon Lake submarine patent

In 1897, a U.S. patent was issused for a "Submarine Vessel" invented by Simon Lake (No. 581,213). It described oscillatory lateral vanes on the sides of the vessel to set for ascending or descending, a weight to shift fore-and-aft to keep the vessel on an even keel, a compressed air reservoir, ballast tanks, an "air-tight diver's chamber provided at the bottom with a trap" (suitable for diving salvage operations), and wheels to travel on the water-bed which could be propelled and steered from within. Lake was interested in the use of a submarine for commercial, rather than military, purposes. It had a hinged observation tube, which could be provided with a mirror (forerunner of the perioscope). It was expected to be steam-powered on the surface (but in practice the heat generated by the boiler was intolerable to a crew, and thus impracticable.)«[Image: rear view of submarine, showing hull with lateral vanes, wheels and propeller.]
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