## Give one example each to show that rational number are closed under addition subtraction and multiplication are rational number closed under

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## Answers ( )

Rational nos r closed under addition:

1+2=3 which is a rational no.

Rational nos r closed under subtraction:

10-2=8 which is a rational no.

Rational nos r closed under multiplication:20×4=80which is a rational no.

Rational nos r closed under division:

20