Let * be the binary operation on N given by `a * b =LCM of a and b, a AA a, b N.` Find 5 * 7.

Let * be the binary operation on N given by a*b" "=" "LdotCdotMdot of a and b. Find (i) 5" "*" "7," "20" "*" "16 (ii) Is * commutative? (iii) Is * associative? (iv) Find the identity of * in N (v) Which elements of N are invert

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=LCM (a,b) for all a, b inN . Find 20**16

Let * be a binary operation on N given by a*b =Lcm of a and b find the value of 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=LdotCdotM(a , b) for all a , b in N . (i) Find 5*7, 20*16 (ii) Is * commutative?

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 binary operation on N defined by a ** b = L.C.M. of a and b. Find (i) Identify element of ** in N (ii) Elements of N which are invertible to the operation *

Let * be the binary operation on N defined by a*b=HCF of a and b .Does there exist identity for this binary operation 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