Question : The HCF of two numbers 960 and 1020 is:
Option 1: 40
Option 2: 120
Option 3: 60
Option 4: 80
Correct Answer: 60
Solution :
Factors of 960 = 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5
Factors of 1020 = 2 × 2 × 3 × 5 × 17
$\therefore$ HCF of 960 and 1020 = 2 × 2 × 3 × 5 = 60
Hence, the correct answer is 60.
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