Question

FIND The HCF 39,78, 195​

Answer 1

Answer:

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Step-by-step explanation:

Write all numbers as the product of its prime factors

Prime factors of 39 = 3 . 13

Prime factors of 78 = 2 . 3 . 13

Prime factors of 195 = 3 . 5 . 13

3. Choose the common prime factors with the lowest exponent

Common prime factors: 3 , 13

Common prime factors with the lowest exponent: 31, 131

4. Calculate the Greatest Common Factor or GCF

Remember, to find the GCF of several numbers you must multiply the common prime factors with the lowest exponent.

GCF = 3^1 x  13^1 = 39