The following pencast shows you how to use the product of prime factors to find the HCF or LCM of two or more numbers.
This is very useful, especially for large numbers.
LCM - pick the highest power of each prime factor and multiply together.
HCF - pick the lowest power of the common prime factors and multiply together.
This is very useful, especially for large numbers.
LCM - pick the highest power of each prime factor and multiply together.
HCF - pick the lowest power of the common prime factors and multiply together.
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