A subset of the additive group of real numbers which is not a sub group, is

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A subset of the additive group of real numbers which is not a sub group, is

MathematicsSets and RelationsCOMEDKCOMEDK 2016

Options:

A $(Q,+)$
B $(N,+)$
C $(Z,+)$
D $(\{0\},+)$

Solution:

2454 Upvotes Verified Answer

The correct answer is: $(N,+)$

In additive subgroup ' $O$ ' is the identity. So, required set $(N,+)$ which is not a subgroup.

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