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Is the set of rational numbers closed under subtraction?

Class 8Properties of Rational NumbersRational Numbers
  • AYes, the difference of two rationals is always rational
  • BNo, sometimes it is irrational
  • COnly for positive rationals
  • DOnly when the answer is positive

Step-by-Step Solution

For any rationals a and b, a - b is again a rational number. So rationals are closed under subtraction.
Answer: A) Yes, the difference of two rationals is always rational

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