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Let * be the binary operation on N given...

Let * be the binary operation on N given by a*b = LCM 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 invertible for the operation ?

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MODERN PUBLICATION-TEST PAPER 8-EXERCISE
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  2. Test whether the relations are reflexive, symmetric or transitive on t...

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  3. Let * be the binary operation on N given by a*b = LCM of a and b. Fin...

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  8. Find the inverse of the following matrix [{:(1,1,2),(0,1,2),(1,2,1):}]...

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