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What is the LCM of 10 and 28?

The lcm of 10 and 28 is 140.

Steps to find LCM

  1. Find the prime factorization of 10
    10 = 2 × 5
  2. Find the prime factorization of 28
    28 = 2 × 2 × 7
  3. Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:

    LCM = 2 × 2 × 5 × 7
  4. LCM = 140

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