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Basic Mathematics QUESTION #7937
Question 1
What is the L.C.M. of 25, 30, 35 and 40?
  • 3800
  • 4200✔️
  • 4400
  • None
Correct Answer Explanation
To find the L.C.M., we use prime factorization:
  • \(25 = 5^2\)
  • \(30 = 2 \times 3 \times 5\)
  • \(35 = 5 \times 7\)
  • \(40 = 2^3 \times 5\)
L.C.M. \(= 2^3 \times 3 \times 5^2 \times 7 = 8 \times 3 \times 25 \times 7 = 4200\)