GCF of 5 and 3 is 1.
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The GCF is 1.
Multiply grouped, common, prime factors to get the GCF: 25 = 5 * 5 75 = 3 * 5 * 5 115 = 5 * 23 GCF = 5
The GCF of 6 and 15 is 3. 6/15 = 2/5
The GCF of 30 and 55 is 5.The prime factorization of 30 is 2*3*5.The prime factorization of 55 is 5*11Therefore, the GCF of 30 and 55 is 5.
The GCF is 20. Prime Factorization of: 40 = 2 * 2 * 2 * 5 60 = 2 * 2 ..... * 5 * 3 ================ GCF=2 * 2 .....* 5 GCF=20