Question : Find the HCF of 364 and 724.
Option 1: 4
Option 2: 2
Option 3: 6
Option 4: 364
Correct Answer: 4
Solution :
Factors of 364 = 2 × 2 × 7 × 13
Factors of 724 = 2 × 2 × 181
The highest common factor is 2 × 2 = 4
Hence, the correct answer is 4.