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The World of Algorithms Class 9

CBSE

Algorithms as step-by-step procedures: finding divisors, GCD, LCM and primes, and making procedures efficient.

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Topic-wise short notes with solved examples.Open PDFDownload
Every formula and result of the chapter on one sheet.Open PDFDownload
Daily practice problems with an answer key.Open PDFDownload

What this chapter covers

  • What an algorithm is
  • The addition algorithm
  • Finding the divisors of a number
  • A first algorithm for the gcd
  • Improving the algorithm
  • Euclid's subtraction algorithm
  • Āryabhaṭa's division algorithm
  • Comparing the algorithms

The short notes explain each of these topics with solved examples, the formula bank lists every result on one sheet, and the DPP sheet gives practice questions with an answer key.

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