Q. 135.0( 1 Vote )

For the binary op

Answer :

From the definition of multiplication modulo

a*b = (m is the base of the modulo)


Here the base is 5 and the set is S = {1,2,3,4}


So, we can make a composition table as :-



The identity element is 1.


The inverse element of 4 is 4 itself.


(3 4-1)-1 = (3 1) -1 = 3-1 = 2.


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