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Bidisha Shit posted an Question
September 25, 2020 • 16:18 pm 30 points
  • IIT JAM
  • Mathematics (MA)

Sir i choose option d ,but c is given, explain please.

sir I choose option D ,but C is given, explain please.

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    Deepak singh 1

    A is clearly countable as rationals are countable...

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    Deepak singh 1 best-answer

    see attached, option c is correct

    cropped5763935549866642543.jpg
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    but for option A it is defined on the complex plane , in the complex plane Z=re^itheta ,it is finite when |r|= 1\n and theta is rational multiple simultaneously\notherwise it is uncountable ....but here is given only rational

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    I have attached proof , see in post

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    you are saying about this group theory result..but here its different

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    feel free to ask again

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