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Q: The LCM of 14, 35 and 56 is:
  • A. 280
  • B. 140
  • C. 210
  • D. 560
Correct Answer: Option A - Finding the LCM by using prime factorization method, 14 = 2 × 7 35 = 5 × 7 56 = 2 × 2 × 2 × 7 Hence, the required LCM = 7 × 5 × 2 × 2 × 2 = 280
A. Finding the LCM by using prime factorization method, 14 = 2 × 7 35 = 5 × 7 56 = 2 × 2 × 2 × 7 Hence, the required LCM = 7 × 5 × 2 × 2 × 2 = 280

Explanations:

Finding the LCM by using prime factorization method, 14 = 2 × 7 35 = 5 × 7 56 = 2 × 2 × 2 × 7 Hence, the required LCM = 7 × 5 × 2 × 2 × 2 = 280