Let * be a binary operation on `N` given by `a*b=LdotCdotM(a ,\ b)` for all `a ,\ b in N` . (i) Find 5*7, 20*16 (ii) Is * commutative?

Let '*' be a binary operation on N given by a*b=LdotCdotMdot(a , b) for all a , b in Ndot Find 5*7,20*16 (ii) Is * commutative? Is * associative? Find the identity element in N Which element of N are invertible? Find them.

Let '*' be a binary operation on N given by a*b=LdotCdotM(a , b) for all a , b in Ndot Find 5*7,20*16

Let '**' be a binary operation on N given by: a**b=LCM (a,b) for all a, b inN . Find 20**16

Let '*' be a binary operation on N given by : a*b = LCM (a,b) for all a, b in N. Find 5*7.

Let * be a binary operation of N given by a * b=L C M\ (a , b) for all a , b in N . Find 5 * 7.

Let * be a binary operation of N given by a a*b=L C M\ (a , b) for all a , b in Ndot Find 5*7.

Let * is a binary operation on N given by a **b=LCM (a, b) for all a, b in N . Find 5**7 .

Let '*' be a binary operation on N given by a* b = LCM (a,b) for all a , b in N . Find 5 * 7.

Let ^(prime*) be a binary operation on N given by a*b=L.C.M.(a,b) for all a,b in N. Find 5*7,20*16 (ii) Is* commutative? Is* associative? Find the identity element in N Which element of N are invertible? Find them.

Let '**' be a binary operation on N given by: a**b=LCM (a,b) for all a, b inN . Find 6**7