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What is the dhortcut to find lcm of a number?

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Use prime factorisation; for eg. if you want to find lcm of 6 and 8, find the prime factors of each no. 6 = 2*3 8 =2*2*2 = 2^3; now find the highest power of each prime factor present so lcm becomes = 2^3* 3= 24

Use prime factorisation; for eg. if you want to find lcm of 6 and 8, find the prime factors of each no. 6 = 2*3 8 =2*2*2 = 2^3; now find the highest power of each prime factor present so lcm becomes = 2^3* 3= 24

Use number theory