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 * 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 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 of N given by a 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=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 = 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 inN . Find 6**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= 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=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=LCM (a,b) for all a, b inN . Find 20**16