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  2. File:Square number 25 as sum of two triangular numbers.svg

    en.wikipedia.org/wiki/File:Square_number_25_as...

    I, the copyright holder of this work, hereby publish it under the following licenses: Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License , Version 1.2 or any later version published by the Free Software Foundation ; with no Invariant Sections, no Front-Cover Texts, and no ...

  3. Congratulations (Cliff Richard song) - Wikipedia

    en.wikipedia.org/wiki/Congratulations_(Cliff...

    "Congratulations" is a song recorded by British singer Cliff Richard written by Bill Martin and Phil Coulter. It represented the United Kingdom in the Eurovision Song Contest 1968, held in London placing second behind the Spanish entry, "La, la, la". The song went on to reach number 1 in many countries including Spain.

  4. Trachtenberg system - Wikipedia

    en.wikipedia.org/wiki/Trachtenberg_system

    Some of the algorithms Trachtenberg developed are for general multiplication, division and addition. Also, the Trachtenberg system includes some specialised methods for multiplying small numbers between 5 and 13. The section on addition demonstrates an effective method of checking calculations that can also be applied to multiplication.

  5. Stepped reckoner - Wikipedia

    en.wikipedia.org/wiki/Stepped_reckoner

    To multiply by numbers over 9: The multiplicand is set into the operand dials. The first (least significant) digit of the multiplier is set into the multiplier dial as above, and the crank is turned, multiplying the operand by that digit and putting the result in the accumulator. The input section is shifted one digit to the left with the end ...

  6. Multiplication - Wikipedia

    en.wikipedia.org/wiki/Multiplication

    Multiplication by a positive number preserves the order: For a > 0, if b > c, then ab > ac. Multiplication by a negative number reverses the order: For a < 0, if b > c, then ab < ac. The complex numbers do not have an ordering that is compatible with both addition and multiplication. [30]

  7. Product (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Product_(mathematics)

    In mathematics, a product is the result of multiplication, or an expression that identifies objects (numbers or variables) to be multiplied, called factors.For example, 21 is the product of 3 and 7 (the result of multiplication), and (+) is the product of and (+) (indicating that the two factors should be multiplied together).

  8. Congratulations: 50 Years of the Eurovision Song Contest

    en.wikipedia.org/wiki/Congratulations:_50_Years...

    Cover art of the official album To coincide with the broadcast of the programme, an official compilation album for the 50th anniversary titled The Very Best of the Eurovision Song Contest (also known as Congratulations: 50 Years of the Eurovision Song Contest ), [ 57 ] was put together by the European Broadcasting Union and released by CMC ...

  9. Numbers 25 - Wikipedia

    en.wikipedia.org/?title=Numbers_25&redirect=no

    This page was last edited on 5 August 2024, at 07:00 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...