are rational numbers closed under addition, subtraction, multiplication and division?

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Solution

Rational number are closed under addition, subtraction and multiplication but are not closed under division.

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Similar questions

Q. Give one example each to show that the rational numbers are closed under addition, subtraction and multiplication. Are rational numbers closed under division? Give two examples in support of your answer.

Question 4
Which of the following is not true?
(a) rational numbers are closed under addition.
(b) rational numbers are closed under subtraction.
(c) rational numbers are closed under multiplication.
(d) rational numbers are closed under division.

Q. Question 104
Give one example each to show that the rational numbers are closed under addition, subtraction and multiplication. Are rational numbers closed under division? Give two examples in support of your answer.

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Rational numbers are closed under addition and multiplication but not under subtraction.

Q. Question 77
Rational numbers are closed under addition and multiplication but not under subtraction.

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