Real Numbers in Mathematics
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Questions and Answers

Which set is denoted by R or $R$?

  • The set of imaginary numbers
  • The set of irrational numbers
  • The set of real numbers (correct)
  • The set of rational numbers

    • What distinguishes real numbers from imaginary numbers?

  • Their presence on the number line
  • Their role in calculus
  • The adjective 'real', used by René Descartes in the 17th century (correct)
  • Their representation by infinite decimal expansion

    • What are irrational numbers?

  • Numbers that are the root of a polynomial with integer coefficients
  • Numbers that include the rational numbers
  • Numbers that can be represented by an infinite decimal expansion
  • Numbers that cannot be represented as a fraction (correct)

    • Which type of number includes the integer -5 and the fraction 4/3?

    <p>Rational numbers</p> Signup and view all the answers

    How can real numbers be thought of geometrically?

    <p>All points on a line called the number line or real line</p> Signup and view all the answers

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