Question

what is the HCF of 21 and 25​

Answer 1

Answer:

it's hcf is 1

Step-by-step explanation:

because 21=7×3×1

and 25=5×5×1

and thus the hcf is the highest common factor and the only common factor found in both is 1

Answer 2

1 is the HCF of 21 and 25