Question : Find the LCM of 28 and 92.
Option 1: 464
Option 2: 644
Option 3: 161
Option 4: 322
Correct Answer: 644
Solution :
Factors of 28 = 2 × 2 × 7
Factors of 92 = 2 × 2 × 23
$\therefore$ LCM of 28 and 92 = 2 × 2 × 7 × 23 = 644
Hence, the correct answer is 644.
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