Answer:
HCF = 12
Step-by-step explanation:
Expressing the numbers as products of their prime factors
84 = 2² × 3 × 7
120 = 2³ × 3 × 5
Identify the prime factors that both numbers have in common and multiply them.
Both have 2² and 3 in common, thus
HCF = 2² × 3 = 4 × 3 = 12
