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What is the least common multiple of 8 and 10 ?

lcm(8,10)=

What is the least common multiple of 88 and 1010 ?\newlinelcm(8,10)= \operatorname{lcm}(8,10)=

Full solution

Q. What is the least common multiple of 88 and 1010 ?\newlinelcm(8,10)= \operatorname{lcm}(8,10)=
  1. Find Prime Factorization: To find the least common multiple (LCM) of 88 and 1010, we first need to find the prime factorization of each number.\newlineThe prime factorization of 88 is 232^3, since 8=2×2×28 = 2 \times 2 \times 2.\newlineThe prime factorization of 1010 is 2×52 \times 5, since 10=2×510 = 2 \times 5.
  2. Identify Highest Powers: Next, we identify the highest powers of all the prime factors that appear in the factorization of both numbers.\newlineFor the number 88, the highest power of 22 is 232^3.\newlineFor the number 1010, the highest power of 22 is 212^1 and the highest power of 55 is 515^1.
  3. Calculate LCM: To find the LCM, we take the highest powers of all prime factors that appear in the factorization of both numbers.\newlineSo, we take 232^3 from the number 88 and 515^1 from the number 1010.\newlineSince there is no common factor of 55 in the prime factorization of 88, we only take the highest power of 55 from 1010, which is 515^1.
  4. Multiply Highest Powers: Now, we multiply these highest powers together to get the LCM.\newlineLCM(88, 1010) = 23×512^3 \times 5^1\newlineLCM(88, 1010) = 8×58 \times 5\newlineLCM(88, 1010) = 4040

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