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English\[2,5,9\]
1 List the factors of each number. Factors of 2 : 1, 2Factors of 5 : 1, 5Factors of 9 : 1, 3, 92 Find the largest number that is shared by all rows above. This is the GCF. GCF = 1 List the prime factors of each number. Prime Factors of 2 : 2Prime Factors of 5 : 5Prime Factors of 9 : 3, 32 Find the intersection of these primes. None 3 There is no prime factor shared by all numbers. Therefore, the GCF is . GCF = Done  |
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