Which of the following is not true? - Mathematics

Question

Which of the following is not true?

Options

Rational numbers are closed under addition.
Rational numbers are closed under subtraction.
Rational numbers are closed under multiplication.
Rational numbers are closed under division.

MCQ

Solution

Rational numbers are closed under division.

Explanation:

Rational numbers are not closed under division.

As, 1 and 0 are the rational numbers but $\frac{1}{0}$ is not defined.

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Rational Numbers

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Q 4.Q 3.Q 5.

Chapter 1: Rational Numbers - Exercise [Page 9]

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NCERT Exemplar Mathematics [English] Class 8

Chapter 1 Rational Numbers
Exercise | Q 4. | Page 9

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Which of the following is not true? - Mathematics

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