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In the relation VTn = C, the value of n for carbide tools is
0.1 to 0.2
0.20 to 0.25
0.25 to 0.40
0.40 to 0.55
0.1 to 0.2
0.20 to 0.25
0.25 to 0.40
0.40 to 0.55