Multiple Choice Question (MCQ)

Which one of the following is not a rational number

  1. \sqrt{3}

  2. ×

    0

  3. ×

    \sqrt{4}

  4. ×

    - \sqrt{16}

Collected in the board: Rational numbers

Steven Zheng posted 4 hours ago

Answer

  1. Square root of a prime number is always irrational, so \sqrt{3} is not a rational number

  2. 0 is a rational number because it can be expressed in a fraction of zero norminator and a non-zero denominator.

  3. Square root of a perfect square results in an integer, \sqrt{4} =2 , so \sqrt{4} is rational.

  4. - \sqrt{16} =-4

    The same explanation as above

Steven Zheng posted 4 hours ago

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