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  2. Srinivasa Ramanujan - Wikipedia

    en.wikipedia.org/wiki/Srinivasa_Ramanujan

    Srinivasa Ramanujan Aiyangar [a] (22 December 1887 – 26 April 1920) was an Indian mathematician.Often regarded as one of the greatest mathematicians of all time, though he had almost no formal training in pure mathematics, he made substantial contributions to mathematical analysis, number theory, infinite series, and continued fractions, including solutions to mathematical problems then ...

  3. Galaxy morphological classification - Wikipedia

    en.wikipedia.org/wiki/Galaxy_morphological...

    In addition, the Sd class contains some galaxies from Hubble’s Sc class. Galaxies in the classes Sm and Im are termed the “Magellanic” spirals and irregulars, respectively, after the Magellanic Clouds. The Large Magellanic Cloud is of type SBm, while the Small Magellanic Cloud is an irregular (Im).

  4. HegartyMaths - Wikipedia

    en.wikipedia.org/wiki/HegartyMaths

    HegartyMaths was an educational subscription tool used by schools in the United Kingdom.It was sometimes used as a replacement for general mathematics homework tasks. [1] Its creator, Colin Hegarty, was the UK Teacher of the Year in 2015 and shortlisted for the Varkey Foundation's Global Teacher Prize in 2016.

  5. Extraneous and missing solutions - Wikipedia

    en.wikipedia.org/wiki/Extraneous_and_missing...

    The solution = is in fact a valid solution to the original equation; but the other solution, =, has disappeared. The problem is that we divided both sides by x {\displaystyle x} , which involves the indeterminate operation of dividing by zero when x = 0. {\displaystyle x=0.}

  6. Swachh Bharat Mission - Wikipedia

    en.wikipedia.org/wiki/Swachh_Bharat_Mission

    [5] [6] Phase 1 of the Swachh Bharat Mission (SBM) lasted until 2 October 2019, and Phase 2 is being implemented between 2020–21 and 2024–25 to help cement the work of Phase 1. [ 7 ] Initiated by the Government of India, the mission aimed to achieve an " open-defecation free " (ODF) India by 2 October 2019, the 150th anniversary of the ...

  7. Derangement - Wikipedia

    en.wikipedia.org/wiki/Derangement

    P i receives a hat other than h 1. This case is equivalent to solving the problem with n − 1 people and n − 1 hats because for each of the n − 1 people besides P 1 there is exactly one hat from among the remaining n − 1 hats that they may not receive (for any P j besides P i, the unreceivable hat is h j, while for P i it is h 1).

  8. Baker percentage - Wikipedia

    en.wikipedia.org/wiki/Baker_percentage

    The baker has determined how much a recipe's ingredients weigh, and uses uniform decimal weight units. All ingredient weights are divided by the flour weight to obtain a ratio, then the ratio is multiplied by 100% to yield the baker's percentage for that ingredient:

  9. Kidnapping of Colleen Stan - Wikipedia

    en.wikipedia.org/wiki/Kidnapping_of_Colleen_Stan

    After her kidnapping, Stan stated that she was tortured and kept locked in a box 23 hours a day until she was given a contract and forced to sign herself into slavery for life in January 1978. In view from the box, propped up against her purse under the bed, was a photo of Marie Elizabeth Spannhake, a previous victim whose body was never found ...