What are the HCF of 15 and 21?

Answer 1

Oh honey, the Highest Common Factor of 15 and 21 is 3. It's like finding the common ground between two divas - you gotta go with the biggest number that can divide them both without any drama. So, in this case, 3 is the lucky winner.

Answer 2

The Highest Common Factor (HCF) of 15 and 21 is 3. To find the HCF, we need to determine the largest number that divides both 15 and 21 without leaving a remainder. The factors of 15 are 1, 3, 5, and 15, while the factors of 21 are 1, 3, 7, and 21. The largest number that appears in both lists is 3, making it the HCF of 15 and 21.

Answer 3

Oh, dude, the Highest Common Factor (HCF) of 15 and 21 is 3. It's like the biggest number that can divide both 15 and 21 without leaving any remainder. So yeah, 3 is the HCF, but like, who really cares, right?

Answer 4

3