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Alka gupta Best Answer
order of (a,b) = L.C.M { O(a) , O(b) } O( 0,0) = L.C.M { O(0) , O(0)} = L.C.M { 1,1} =1 similarly we can find order of each element in direct product group by the help of this formula
then what about (0,1) mam...how it's 4
L.C.M { O(1) ,O(1) } = L.C.M { 2,4} =4