Prove of H.C.F(a,b,c)=abc* L.C.M(a,b,c)/L.C.M(a,b)L.C.M(b,c)L.C.M(c,a) and L.C.M(a,b,c)=abc*H.C.F(a,b,c)/H.C.F(a,b)H.C.F(b,c)H.C.F(c,a)

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Prove of H.C.F(a,b,c)=a*b*c* L.C.M(a,b,c)/L.C.M(a,b)*L.C.M(b,c)*L.C.M(c,a) and L.C.M(a,b,c)=a*b*c*H.C.F(a,b,c)/H.C.F(a,b)*H.C.F(b,c)*H.C.F(c,a)