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There are n distinct points in the plane, given by their integer coordinates. Find the number of parallelograms whose vertices lie on these points. In 阅读全文
posted @ 2017-01-21 21:33
DGSX
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Produce a table of the values of the series Equation 1 for the 2001 values of x, x= 0.000, 0.001, 0.002, ..., 2.000. All entries of the table must hav 阅读全文
posted @ 2017-01-21 16:54
DGSX
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Cryptography deals with methods of secret communication that transform a message (the plaintext) into a disguised form (the ciphertext) so that no one 阅读全文
posted @ 2017-01-21 16:10
DGSX
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In the movie "Die Hard 3", Bruce Willis and Samuel L. Jackson were confronted with the following puzzle. They were given a 3-gallon jug and a 5-gallon 阅读全文
posted @ 2017-01-21 15:31
DGSX
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On every June 1st, the Children's Day, there will be a game named "crashing balloon" on TV. The rule is very simple. On the ground there are 100 label 阅读全文
posted @ 2017-01-21 12:41
DGSX
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