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What identifies whether the given operation is closed or not closed with respect to each set of numbers.

AClosed
BNot closed


Positive integers are ___________ under subtraction.


Rational numbers are ____________ under multiplication.


Negative real numbers are _________ under division.


Irrational numbers are __________ under addition.

Verified Answer :

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Answer:

1st is not closed.

2nd is closed

3rd is not closed

4th is closed

Step-by-step explanation:


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