" Q.12: Let * be a 'binary' operation on N given by "a*b=LCM(a,b)AA a,b in N

Let * be a binary operation on N given by a**b=LCM(a, b) for all a, b in N . (i) Is * commutative. (ii) Is * associative.

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 * 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 inN . Find 20**16

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

Let * be a binary operation on N given by a**b=GCD (a, b) for a, b in N . Check the commutativity and associativity of * on N.

Let * be a binary operation on N given by a*b=HFC(a,b) for all a,b in N, then find :12*4,18*24,7*5

Let '*' be a binary operation on N given by a*b = H.C.F (a,b), a,b in N. Write the value of 22*4.

Let * be a binary operation on N given by a*b=HCF(a,b),quad a,b in N. Write the value of 22*4 .

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