Answer:
4
Step-by-step explanation:
To find the greatest common factor, prime factorize each number then multiply the primes that are common to both numbers.
12 = 2 x 2 x 3
16 = 2 x 2 x 2 x 2
Thus, the greatest common factor is 2 x 2 = 4.
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~~DeanGD20
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