Question

HcF of 935,1320 by division method

Answer 1

1. Decompose all numbers into prime factors 9355 18711 1717 1
13202 6602 3302 1653 555 1111 1
2. Write all numbers as the product of its prime factors Prime factors of 935=5 . 11 . 17 Prime factors of 1320=23 . 3 . 5 . 11 3. Choose the common prime factors with the lowest exponent

Common prime factors: 5 , 11

Common prime factors with the lowest exponent: 51, 111

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 = 51. 111 = 55

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