3 , 15 , 75 , 375 , 1875

Find the common factors for the numerical part:

3,15,75,375,1875

The factors for 3 are all numbers between 1 and 3, which divide 3 evenly.

Check numbers between 1 and 3

Find the factor pairs of 3 where x⋅y=3.

xy13

List the factors for 3.

1,3

1,3

The factors for 15 are all numbers between 1 and 15, which divide 15 evenly.

Check numbers between 1 and 15

Find the factor pairs of 15 where x⋅y=15.

xy11535

List the factors for 15.

1,3,5,15

1,3,5,15

The factors for 75 are all numbers between 1 and 75, which divide 75 evenly.

Check numbers between 1 and 75

Find the factor pairs of 75 where x⋅y=75.

xy175325515

List the factors for 75.

1,3,5,15,25,75

1,3,5,15,25,75

The factors for 375 are all numbers between 1 and 375, which divide 375 evenly.

Check numbers between 1 and 375

Find the factor pairs of 375 where x⋅y=375.

xy137531255751525

List the factors for 375.

1,3,5,15,25,75,125,375

1,3,5,15,25,75,125,375

The factors for 1875 are all numbers between 1 and 1875, which divide 1875 evenly.

Check numbers between 1 and 1875

Find the factor pairs of 1875 where x⋅y=1875.

xy1187536255375151252575

List the factors for 1875.

1,3,5,15,25,75,125,375,625,1875

1,3,5,15,25,75,125,375,625,1875

List all the factors for 3,15,75,375,1875 to find the common factors.

3: 1,3

15: 1,3,5,15

75: 1,3,5,15,25,75

375: 1,3,5,15,25,75,125,375

1875: 1,3,5,15,25,75,125,375,625,1875

The common factors for 3,15,75,375,1875 are 1,3.

1,3

The GCF (HCF) of the numerical factors 1,3 is 3.

3

Find the HCF 3 , 15 , 75 , 375 , 1875