What is the LCM of 4 and 10?

The lcm of 4 and 10 is 20.

Steps to find LCM

  1. Find the prime factorization of 4
    4 = 2 × 2
  2. Find the prime factorization of 10
    10 = 2 × 5
  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
  4. LCM = 20

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