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Rational numbers are closed under which of these operations?

Class 8Properties of Rational NumbersNumber System
  • Aaddition
  • Bdivision by any rational
  • Ctaking square roots
  • Dnone

Step-by-Step Solution

The sum of two rationals is always rational, so they are closed under addition. Division can fail (by 0) and square roots can be irrational.
Answer: A) addition

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