hcf of 52 63 162, hcf of 42 and 162, hcf of 52 156 169, hcf of 56 and 63, hcf of 162 and 216, hcf of 162 108 144, hcf of 63 and 42, hcf of 42 49 and 63, hcf of 56 and 62, hcf of 72 and 63, hcf of 56 and 32, hcf of 63 45 54, hcf of 63 and 168, hcf of 52 143 169, hcf of 42 and 1365, hcf of 56 and 72, hcf of 48 56 72, hcf of 48 16 56
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