Anku posted an Question
June 05, 2021 • 13:50 pm 30 points
  • IIT JAM
  • Mathematics (MA)

Pls once tell which of following method is correct..

pls once tell which of following method is correct..

1 Answer(s) Answer Now
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  • Alka gupta Best Answer

    if we want to find total number of elements of order r then we have to find total possibility of L.C.M of r after that we will find total number of elements of order r . see this result by example

    cropped7027539776027208795.jpg
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    in solution i attached i forgot this red encircled part

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    mam, ans given is 240

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    yes ...I did small calculation mistake

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    your method is also correct....

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    mam..pls once tell if i have done it right..I tried by ur method

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    see

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    got it now mam...thanks a lot mam

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