hcf of 36 and 21, hcf of 36 and 225, gcf of 36 and 216, hcf of 36 and 20, hcf of 36 and 12, hcf of 36 and 126, hcf of 36 and 120, hcf of 36 and 24, hcf of 36 and 144, hcf of 36 and 27, hcf of 36 and 100, hcf of 36 and 28, hcf of 36 and 15, hcf of 36 and 18, hcf of 21 36 66, hcf of 21 28 36 45, hcf of 21 28 36, hcf of 21 36 and 60, hcf of 21 28 and 36
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