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  2. Triangular number - Wikipedia

    en.wikipedia.org/wiki/Triangular_number

    Triangular numbers are a type of figurate number, other examples being square numbers and cube numbers. The n th triangular number is the number of dots in the triangular arrangement with n dots on each side, and is equal to the sum of the n natural numbers from 1 to n. The sequence of triangular numbers, starting with the 0th triangular number, is

  3. How to Solve It - Wikipedia

    en.wikipedia.org/wiki/How_to_Solve_It

    Solve an equation [14] Also suggested: Look for a pattern [15] Draw a picture [16] Solve a simpler problem [17] Use a model [18] Work backward [19] Use a formula [20] Be creative [21] Applying these rules to devise a plan takes your own skill and judgement. [22] Pólya lays a big emphasis on the teachers' behavior.

  4. Mathematics - Wikipedia

    en.wikipedia.org/wiki/Mathematics

    Examples of unexpected applications of mathematical theories can be found in many areas of mathematics. A notable example is the prime factorization of natural numbers that was discovered more than 2,000 years before its common use for secure internet communications through the RSA cryptosystem. [127]

  5. List of integer sequences - Wikipedia

    en.wikipedia.org/wiki/List_of_integer_sequences

    21, 33, 57, 69, 77, 93, 129, 133, 141, 161, 177, ... Numbers of the form pq where p and q are distinct primes congruent to 3 (mod 4). A016105: Magic numbers: 2, 8, 20, 28, 50, 82, 126, ... A number of nucleons (either protons or neutrons) such that they are arranged into complete shells within the atomic nucleus. A018226: Superperfect numbers

  6. DNA evidence leads to suspect 28 years after deadly stabbing

    www.aol.com/dna-evidence-leads-suspect-28...

    Diel was identified through investigative genetic genealogy, where scientists and investigators use a combination of genetic testing and genealogy research to build a family tree for the ...

  7. Subtraction - Wikipedia

    en.wikipedia.org/wiki/Subtraction

    And adding 1 to get the two's complement can be done by simulating a carry into the least significant bit. For example: 01100100 (x, equals decimal 100) - 00010110 (y, equals decimal 22) becomes the sum: 01100100 (x) + 11101001 (ones' complement of y) + 1 (to get the two's complement) —————————— 101001110

  8. Hornets' LaMelo Ball, NBA's 2nd-leading scorer, out at least ...

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    Last season, he played in only 22 games after having surgery on his right ankle and struggling with continued soreness afterward. Ankle injuries limited him to 36 games during the 2022-23 campaign.

  9. This cozy sweater is down to just $30 and is 'flattering for ...

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