Gokul posted an Question
November 14, 2020 • 01:23 am 30 points
  • IIT JAM
  • Mathematics (MA)

In a group g={2,4,6,8} under multiplication modulo 10 , identity element is .......

In a group G={2,4,6,8} under multiplication modulo 10 , identity element is .......

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  • Kiran goswami best-answer

    see attachment

    cropped2877795843416337854.jpg
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    how can we find it without group table

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    find 2 .X=2 and this X remains same for all elements.

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    one doubt ,here a*b=ab/10 ,so here ae/10=a implies.... y can't we use like this

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    a*b not equal to ab/10 , a*b is equal to reminder when divide by 10.

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