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During the COVID-19 pandemic, all IGCSE examinations due to take place in May/June 2020 were cancelled, along with GCSE and A-Level exams that year. As of 31 March 2020, the CAIE had decided to guide schools to predict students' grades through evidence like mock examination results.
Most schools use a mixture of boards for their GCSE qualifications, with a similar mixture existing at A Level. In addition, a school using one board for a particular GCSE subject is free to use a different board for the equivalent subject at A Level.
GCSE results are published by the examination board in August for the exam series in April to June of the same year. They are usually released one week after the A-Level results, on the Thursday that falls between 20 August and 26 August. The examination results are released to centres (schools) prior to the release to candidates and the public.
All square triangular numbers have the form , where is a convergent to the continued fraction expansion of , the square root of 2. [ 4 ] A. V. Sylwester gave a short proof that there are infinitely many square triangular numbers: If the n {\displaystyle n} th triangular number n ( n + 1 ) 2 {\displaystyle {\tfrac {n(n+1)}{2}}} is square, then ...
In mathematics, a square number or perfect square is an integer that is the square of an integer; [1] in other words, it is the product of some integer with itself. For example, 9 is a square number, since it equals 3 2 and can be written as 3 × 3 .
There are two written papers, each comprising half of the weightage towards the subject. Each paper is 2 hours 15 minutes long and worth 90 marks. Paper 1 has 12 to 14 questions, while Paper 2 has 9 to 11 questions. Generally, Paper 2 would have a graph plotting question based on linear law. It was originated in the year 2003 [3]
All centered square numbers and their divisors have a remainder of 1 when divided by 4. Hence all centered square numbers and their divisors end with digit 1 or 5 in base 6, 8, and 12. Every centered square number except 1 is the hypotenuse of a Pythagorean triple (3-4-5, 5-12-13, 7-24-25, ...). This is exactly the sequence of Pythagorean ...
Not only so, but the proportionate number of squares diminishes as we pass to larger numbers, Thus up to 100 we have 10 squares, that is, the squares constitute 1/10 part of all the numbers; up to 10000, we find only 1/100 part to be squares; and up to a million only 1/1000 part; on the other hand in an infinite number, if one could conceive of ...