What number comes next?
[5166] What number comes next? - Look at the series (538, 403, 120, ?), determine the pattern, and find the value of the next number! - #brainteasers #math #riddles - Correct Answers: 69 - The first user who solved this task is Djordje Timotijevic
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What number comes next?

Look at the series (538, 403, 120, ?), determine the pattern, and find the value of the next number!
Correct answers: 69
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #riddles
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Good thinking

Two brunettes and a blonde are driving in the desert when, all of a sudden, their car breaks down.

As none of them have any motoring knowledge, they decide to walk. Each of them decides to take one thing with her.

The first brunette takes some food in case she gets hungry, the second brunette takes some water in case she gets thirsty and the blonde takes a car door.

When questioned about her choice, the blonde replies:

"Well, if I get hot, I can roll down the window!"

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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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