2 x 2 x 3 x 5 = 60
3 x 5 x 5 = 75
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It is: 4
Thaey are the prime factors of 60
60 30,2 15,2,2 5,3,2,2
Prime factorization of 45 = 3x3x5Prime factorization of 60 = 2x2x3x5Prime factorization of 160 = 2x2x2x2x2x5Only common factors are 5 (and 1).Therefore GCF = 5.
Two or more numbers are normally needed to find the LCM