1.

Find the HCF of a) 105,570

Answer»

Find the prime factorization of 105
105 = 3 × 5 × 7

Find the prime factorization of 570
570 = 2 × 3 × 5 × 19

To find the gcf, multiply all the prime FACTORS common to both numbers:

THEREFORE, GCF = 3 × 5

GCF = 15

The greatest common factor (gcf) is also known as greatest common DIVISOR (gcd) or highest common factor (hcf).

Related

Find hcf of: 210 & 1140 315 & 1710 35 & 190 525 & 2850 21 & 114 735 & 3990 210 & 570 105 & 1140 315 & 570 105 & 1710 525 & 570 105 & 2850 735 & 570 105 & 3990



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