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Question

Whole numbers are not closed under ......... operation.

A
addition
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B
subtraction
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C
multiplication
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D
none of these
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Solution

The correct option is D subtraction
Whole numbers are not closed under subtraction operation because when any two whole numbers are considered and from them one is subtracted from the other, the difference so obtained is not necessarily a whole number. Eg. 25=3.

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