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CBSESecondary School (English Medium) (5 to 8) Class 8
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Syllabus

Which of the following is not true?

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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
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Solution

Rational numbers are closed under division.

Explanation:

Rational numbers are not closed under division.

As, 1 and 0 are the rational numbers but `1/0` is not defined.

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Rational Numbers
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Q 4.
Chapter 1: Rational Numbers - Exercise [Page 9]

APPEARS IN

NCERT Exemplar Mathematics Exemplar [English] Class 8
Chapter 1 Rational Numbers
Exercise | Q 4. | Page 9

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

Add the following rational numbers:

\[\frac{7}{- 18} and \frac{8}{27}\]

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\[\frac{- 6}{13} - \frac{- 7}{13}\]

Simplify:

\[\left( - 5 \times \frac{2}{15} \right) - \left( - 6 \times \frac{2}{9} \right)\]

Simplify:

\[\left( \frac{1}{4} \times \frac{2}{7} \right) - \left( \frac{5}{14} \times \frac{- 2}{3} \right) + \left( \frac{3}{7} \times \frac{9}{2} \right)\]

State, True Or False

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–80


Write the following numbers in the form `p/q`, where p and q are integers:

One-fourth


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