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Vijay Singh chauhan Asked a Question
October 8, 2020 10:05 ampts 30 pts
  • IIT JAM
  • Mathematics (MA)

The set of all real matrices of 1 point order 2 under multiplication o forms a group o does not form a semigroup o does not form a groupoid o forms a monoid the

The set of all real matrices of 1 point order 2 under multiplication O forms a group O does not form a semigroup O does not form a groupoid O forms a monoid The set (1, 2, 3,.., n-1} is a group 1 point under multiplication modulonif n is O composite O prime odd O even
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  • Piyush
    Any doubt then you can ask.
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  • Deepak singh thankyou
    In question 1 - it is groupoid , semi group and monoid also but not forms group because inverse of singular matrix not exist . So option d is correct and in question 2 , (Z*n,×)...
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  • Piyush
    For second n is prime. For first It's monoid
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