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  2. Additional Mathematics - Wikipedia

    en.wikipedia.org/wiki/Additional_Mathematics

    The total weighting of the paper is 80 marks and constitutes 44% of the grade. Paper 2 (Duration: 2 hours 30 minutes): Questions are categorised into 3 sections: A, B and C. Section A contains 7 questions which must all be answered. Section B contains 4 questions where students are given the choice to answer 3 out of 4 of them.

  3. GCE Ordinary Level in Sri Lanka - Wikipedia

    en.wikipedia.org/wiki/GCE_Ordinary_Level_in_Sri...

    It is usually taken by students during the final two years of Senior secondary school (Grade 10 & 11 (usually ages 15–16)) or external (non-school) candidate. The exam is usually held in December. The exams are held in three mediums Sinhala, Tamil and English.

  4. Fraction - Wikipedia

    en.wikipedia.org/wiki/Fraction

    [14] [15] It is said to be an improper fraction, or sometimes top-heavy fraction, [16] if the absolute value of the fraction is greater than or equal to 1. Examples of proper fractions are 2/3, −3/4, and 4/9, whereas examples of improper fractions are 9/4, −4/3, and 3/3.

  5. List of sums of reciprocals - Wikipedia

    en.wikipedia.org/wiki/List_of_sums_of_reciprocals

    The sum of the reciprocals of the first n primes is not an integer for any n. There are 14 distinct combinations of four integers such that the sum of their reciprocals is 1, of which six use four distinct integers and eight repeat at least one integer. An Egyptian fraction is the sum of a

  6. Summation - Wikipedia

    en.wikipedia.org/wiki/Summation

    The summation of an explicit sequence is denoted as a succession of additions. For example, summation of [1, 2, 4, 2] is denoted 1 + 2 + 4 + 2, and results in 9, that is, 1 + 2 + 4 + 2 = 9. Because addition is associative and commutative, there is no need for parentheses, and the result is the same irrespective of the order of the summands ...

  7. Continued fraction - Wikipedia

    en.wikipedia.org/wiki/Continued_fraction

    Continued fractions can also be applied to problems in number theory, and are especially useful in the study of Diophantine equations. In the late eighteenth century Lagrange used continued fractions to construct the general solution of Pell's equation, thus answering a question that had fascinated mathematicians for more than a thousand years. [9]

  8. Division (mathematics) - Wikipedia

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

    ) Usually the resulting fraction should be simplified: the result of the division of 52 by 22 is also . This simplification may be done by factoring out the greatest common divisor . Give the answer as an integer quotient and a remainder , so 26 11 = 2 remainder 4. {\displaystyle {\tfrac {26}{11}}=2{\mbox{ remainder }}4.}

  9. GCSE - Wikipedia

    en.wikipedia.org/wiki/GCSE

    In Northern Ireland a decision was taken by Minister of Education, Peter Wier , in 2016 to align the A* Grade to the 9 Grade of the English reformed qualifications. [15] The first award of the new A* grade being in 2019. A C* grade was also introduced in Northern Ireland to align to the 5 Grade in England, again with first awarding in 2019.

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