CBSE Class 8 Mathematics Question 2 of 4

A Story of Numbers — Question 2

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Question
One way of extending the number system in Method 2 is by using strings with more than one letter — for example, we could use ‘aa’ for 27. How can you extend this system to represent all the numbers? There are many ways of doing it!
Answer

a, b, c, …, z are 26 numbers aa, bb, …, zz are 26 more numbers.


Source: This question is from A Story of Numbers, Mathematics — Class 8, CBSE Board.

Key Concepts Covered

This question tests your understanding of the following concepts from the chapter A Story of Numbers: Way, Extending, Number, System, Method, Strings. These are fundamental topics in Mathematics that students are expected to master as part of the CBSE Class 8 curriculum.

A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Mathematics papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.

How to Approach This Question

Read the question carefully and identify what is being asked. Break down complex questions into smaller parts. Use the terminology and concepts discussed in this chapter. Structure your answer logically — begin with a definition or key statement, then provide supporting details. Review your answer to ensure it addresses all parts of the question completely.

Key Points to Remember

  • Always show your working steps clearly.
  • Verify your answer by substituting values back into the equation.
  • Practice similar problems from the textbook exercises.
  • Memorise important formulae and their conditions of applicability.

Practice more questions from A Story of Numbers — Mathematics, Class 8 CBSE