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  2. Least common multiple - Wikipedia

    en.wikipedia.org/wiki/Least_common_multiple

    A multiple of a number is the product of that number and an integer. For example, 10 is a multiple of 5 because 5 × 2 = 10, so 10 is divisible by 5 and 2. Because 10 is the smallest positive integer that is divisible by both 5 and 2, it is the least common multiple of 5 and 2.

  3. Halt and Catch Fire (computing) - Wikipedia

    en.wikipedia.org/wiki/Halt_and_Catch_Fire...

    The Motorola 6800 microprocessor was the first for which an undocumented assembly mnemonic HCF became widely known. The operation codes (opcodes—the portions of the machine language instructions that specify an operation to be performed) hexadecimal 9D and DD were reported and given the unofficial mnemonic HCF in a December 1977 article by Gerry Wheeler in BYTE magazine on undocumented ...

  4. Knapsack problem - Wikipedia

    en.wikipedia.org/wiki/Knapsack_problem

    A multiple constrained problem could consider both the weight and volume of the books. (Solution: if any number of each book is available, then three yellow books and three grey books; if only the shown books are available, then all except for the green book.) The knapsack problem is the following problem in combinatorial optimization:

  5. Wiesen Test of Mechanical Aptitude - Wikipedia

    en.wikipedia.org/wiki/Wiesen_Test_of_Mechanical...

    The Wiesen Test of Mechanical Aptitude (WTMA) is among the most popular mechanical reasoning tests and is considered very reliable. [1] The WTMA is a 30 minute, sixty-question test used to measure mechanical aptitude. It is used for employment testing of job applicants and to help select vocational education students. The WTMA assesses broad ...

  6. Linear congruential generator - Wikipedia

    en.wikipedia.org/wiki/Linear_congruential_generator

    Note that a power-of-2 modulus shares the problem as described above for c = 0: the low k bits form a generator with modulus 2 k and thus repeat with a period of 2 k; only the most significant bit achieves the full period.

  7. Euclidean algorithm - Wikipedia

    en.wikipedia.org/wiki/Euclidean_algorithm

    In mathematics, the Euclidean algorithm, [note 1] or Euclid's algorithm, is an efficient method for computing the greatest common divisor (GCD) of two integers, the largest number that divides them both without a remainder. It is named after the ancient Greek mathematician Euclid, who first described it in his Elements (c. 300 BC).

  8. Polynomial greatest common divisor - Wikipedia

    en.wikipedia.org/wiki/Polynomial_greatest_common...

    Note: "lc" stands for the leading coefficient, the coefficient of the highest degree of the variable. This algorithm computes not only the greatest common divisor (the last non zero r i ), but also all the subresultant polynomials: The remainder r i is the (deg( r i −1 ) − 1) -th subresultant polynomial.

  9. abc conjecture - Wikipedia

    en.wikipedia.org/wiki/Abc_conjecture

    Whereas it is known that there are infinitely many triples (a, b, c) of coprime positive integers with a + b = c such that q(a, b, c) > 1, the conjecture predicts that only finitely many of those have q > 1.01 or q > 1.001 or even q > 1.0001, etc.