Number Line and Integers Class 9 Mathematics
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Questions and Answers

Which term is used to represent the integers on a number line?

  • Negative numbers
  • Positive numbers
  • Rational numbers (correct)
  • Units

    • What do the points to the left of O represent on the number line?

  • Fractions
  • Negative integers (correct)
  • Positive integers
  • Decimals

    • Why are numbers of the form q0 considered rational numbers?

  • Because they are whole numbers
  • Because they are odd numbers
  • Because they can be expressed as decimal numbers
  • Because they can be represented as ratios of two integers (correct)

    • Which word does the term 'rational' originate from?

    <p>'Ratio' (B)</p> Signup and view all the answers

    What set is used to denote the collection of rational numbers?

    <p>Q (Rational numbers) (C)</p> Signup and view all the answers

    What does the term 'unit length' refer to in the context of the number line?

    <p>An equal length to set off distances on both sides of a point (D)</p> Signup and view all the answers

    Why is 0 considered a rational number?

    <p>Because it can be expressed in the form $0=0$. (D)</p> Signup and view all the answers

    Which of the following statements correctly explains why every natural number is a rational number?

    <p>Because every natural number can be written in the form $n = n/1$. (C)</p> Signup and view all the answers

    What defines the simplest form of a rational number according to the information provided?

    <p>Having the numerator and denominator as co-prime integers. (C)</p> Signup and view all the answers

    Based on the text, what makes two rational numbers equivalent?

    <p>Having a common factor other than 1. (B)</p> Signup and view all the answers

    How are equivalent rational numbers related to each other, as per the text?

    <p>They have different numerators but the same denominator. (D)</p> Signup and view all the answers

    What characteristic defines whether a rational number is in its simplest form?

    <p>Having the smallest absolute values for both numerator and denominator. (C)</p> Signup and view all the answers

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