Calculate the Greatest Common Factor or GCF of 55 and 750
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The instructions to find the GCF of 55 and 750 are the next:
1. Decompose all numbers into prime factors
| 55 | 5 |
| 11 | 11 |
| 1 |
| 750 | 2 |
| 375 | 3 |
| 125 | 5 |
| 25 | 5 |
| 5 | 5 |
| 1 |
2. Write all numbers as the product of its prime factors
| Prime factors of 55 | = | 5 . 11 |
| Prime factors of 750 | = | 2 . 3 . 53 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 5
Common prime factors with the lowest exponent: 51
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 = 5
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