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4 January, 13:02

Find the lcm of 18 and 48. insert all the prime numbers in the corresponding boxes below

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  1. 4 January, 13:40
    0
    Lcm=least common multiplule

    factor

    18=2*3*3

    48=2*2*2*2*3

    we need to have at least two 3's and four 2's

    lcm=2*2*2*2*3*3=144
  2. 4 January, 14:04
    0
    What you're discussing here is prime factorization (or turning a number into the multiples of its prime numbers). 18 becomes 2*3*3. 48 becomes 2*2*2*2*3. They share one 2 and one 3 in those prime factors. Which is why 6 is their least common multiple (or LCM). Because, 2*3 = 6.
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