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pravin Kumar

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last 3 solved tasks
If 4a5ab + 76ba4 = 1c64ac find number abc. Multiple solutions may exist.
If a2113 + 5aacb = 9c5b1 find number abc. Multiple solutions may exist.
If c06c2 - 6041a = 102b4 find number abc. Multiple solutions may exist.

Samuel Hall

Died 21 Nov 1863 (born 1781).English engineer who invented the surface condenser for steam boilers (patented 1834), an important milestone of its era, because it possible to recirculate fresh water instead of using corrosive salt water in the boilers of ocean-going steam ships. Steam passed through a number of small condensing tubes cooled on the outside surfaces by the circulation of cold sea water around them. By keeping the boilers free of salt, a considerable saving of fuel was realized, and repair expenses were reduced. Initial trials were unsuccessful until improved by a patent by Spencer who inserted an indiarubber ring around each end of the tube to keep them properly water tight. Hall held more than 20 patents, mostly relating to steam engines and boilers.

Eat The Watermelons

A farmer in the country has a watermelon patch and upon inspection he discovers that some of the local kids have been helping themselves to a feast.
The farmer thinks of ways to discourage this profit-eating situation. So he puts up a sign that reads: "WARNING! ONE OF THESE WATERMELONS CONTAINS CYANIDE!"
He smiled smugly as he watched the kids run off the next night without eating any of his melons.
The farmer returns to the watermelon patch a week later to discover that none of the watermelons have been eaten, but finds another sign that reads: "NOW THERE ARE TWO!"
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