given that hcf 100 , 140 is 20 , find the lcm 100 and 140
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Answer:
Find the prime factorization of 100
100 = 2 × 2 × 5 × 5
Find the prime factorization of 140
140 = 2 × 2 × 5 × 7
Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:
LCM = 2 × 2 × 5 × 5 × 7
LCM = 700
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