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let * be a binaray operation on N given by a*b = 1cm (a,b) ,a,b belong to N find 2*4 and is N,* associative?
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Oct 4, 2013
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sharon.r.varghese_1
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(a*b)*c= LCM(a,b)*c and a*(b*c) = a*LCM(b,c)= LCM (a,b,c)
Therefore (a*b)*c = a*(b*c) for all a,b,c belongs to N
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Oct 24, 2013
by
vijayalakshmi_ramakrishnans
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