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asked in Set Theory & Algebra by (343 points) | 102 views
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B. Only 1 is Group
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@Kunal Kadian

identity of group i)..?

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C ) ??
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@MiNiPanda identity is 0

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@Kunal Kadian

But given that n is positive number..not non negative

+1

@MiNiPanda

here inverse not exists

So, both will not a group D)

rt?

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Oh! I thought "modulo" is also present in (1).

Yes then answer is D.
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answer is given A.

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