hcf of 5 and 0, hcf of 5 and 10, hcf of 5 and 20, hcf of 5 and 100, hcf of 5 and 30, hcf of 5 and 7, hcf of 5 and 15, hcf of 5 and 6, hcf of 5 and 25, hcf of 5 and 9, hcf of 5 and 8, hcf of 5 and 11, hcf of 5 and 4
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