what will be the HCF of 7,13 and 20
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gcf, hcf, gcd (7; 13) = 1: greatest (highest) common factor (divisor), calculated. Coprime numbers (relatively prime). Numbers have no common prime factors.
The prime factors of 20 are 2 x 2 x 5. 9 and 20 have no prime factors in common. The greatest common factor is 1.
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