Answer:
12
Step-by-step explanation:
To find the greatest common factor if 72 and 84 first we need to find factors of them separately
72 : 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72
84 : 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84
there are 6 common factors that are 1, 2, 3, 4, 6, and 12
Therefore, the highest common factor of 72 and 84 is 12.
we can find highest common factor by other method called prime factorization for the you need to factorize them separately
prime factorization of
72 : 2 × 2 × 2 × 3 × 3
84: 2 × 2 × 3 × 7
now we have to find common prime factors
those are 2 × 2 × 3
now multiply them
= 12
