What number comes next?
[5184] What number comes next? - Look at the series (9, 73, 241, 561, 1081, 1849, ?), determine the pattern, and find the value of the next number! - #brainteasers #math #riddles - Correct Answers: 40 - The first user who solved this task is Fazil Hashim
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What number comes next?

Look at the series (9, 73, 241, 561, 1081, 1849, ?), determine the pattern, and find the value of the next number!
Correct answers: 40
The first user who solved this task is Fazil Hashim.
#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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Electromagnet first exhibited

In 1825, the electromagnet in a practical form was first exhibited by its inventor, William Sturgeon, on the occasion of reading a paper, recorded in the Transactions of the Society of Arts for 1825 (Vol xliii, p.38). The publication showed pictures of his set of improved apparatus for electromagnetic experiments, including two electromagnets, one of horse-shoe shape and one a straight bar. The formed was bent from a rod about 1 foot (30 cm) long and one-half inch (1.3 cm) in diameter, varnished for insulation, then coiled with a single spiral of 18 turns of stout copper wire. In return for the Society's medal and premium, Sturgeon deposited the apparatus in the museum of the Society. Sadly, this was lost after the society's museum was dispersed.«
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