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Question

Which of these set(s) is/are closed under subtraction?


A

9

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B

3

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C

1

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D

0

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Solution

The correct options are
B

3


D

0


The set of integers and rational numbers are closed under subtraction as the difference between any two integers or two rational numbers gives another integer or rational number.

1 - 2 = -1, Hence natural numbers and whole numbers are not closed under subtraction.


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