MATH PUZZLE: Can you replace...
[6402] MATH PUZZLE: Can you replace... - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 62 - The first user who solved this task is Nasrin 24 T
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MATH PUZZLE: Can you replace...

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 62
The first user who solved this task is Nasrin 24 T.
#brainteasers #math #riddles
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An Inscription Problem

According to the Knight-Ridder News Service, the inscription on the metal bands used by the U.S. Department of the Interior to tag migratory birds has been changed. The bands used to bear the address of the Washington Biological Survey, abbreviated, "Wash. Biol. Surv." until the agency received the following letter from an Arkansas camper:
"Dear Sirs: While camping last week I shot one of your birds. I think it was a crow. I followed the cooking instructions on the leg tag and I want to tell you it was horrible."
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Compound steam engine patent

In 1781, a British patent was taken out for the first compound steam engine by Jonathan Carter Hornblower (No. 1298). His invention was to use two cylinders of unequal size attached to the same beam. Steam acts first in a small high-pressure cylinder, leaving at a lower pressure, but still sufficient to expand further in a larger cylinder. Although he claimed greater efficiency, this was not realised at the low steam pressures of the day. Boulton and Watt claimed infringement on their earlier patent since this engine still used a separate condenser, so Hornblower had to abandon that design at the time. His compound steam engine principle was later revived in 1804 by Arthur Woolf using higher steam pressure with better results.«
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