What is the greatest common factor of 20, 32, and 88?
Answer (2)
20∣2 10∣2 . 5∣5 . 1∣ 20 = 2 × 2 × 5 32∣2 16∣2 . 8∣2 . 4∣2 . 2∣2 . 1∣ 32 = 2 × 2 × 2 × 2 × 2 88∣2 44∣2 22∣2 11∣11 . 1∣ 88 = 2 × 2 × 2 × 11 GCF ( 20 ; 32 ; 88 ) = 2 × 2 = 4
The greatest common factor (GCF) of 20, 32, and 88 is 4. This was determined by finding the prime factorization of each number and identifying the smallest power of their common prime factors. The only common prime factor across the three numbers is 2, leading us to the GCF of 4.
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