No. The prime factors of 140 are 2,2,5 and 7 The prime factors of 210 are 2,3,5 and 7 The common prime factors are 2,5 and 7 Thus the HCF is 2x5x7, or 70.
The GCF is 30.
3.
The HCF of 30 and 105 is 15.
The GCF is 18.
The HCF/GCF of 385 and 210 is 35.
Prime factors of 210 are: 2, 3, 5 and 7 Prime factors of 385 are: 5,7 and 11 Common factors are: 5 and 7 and so 5*7 = 35 which is the hcf
The GCF is 30.
HCF = 14
HCF(210, 308) = 14.
The GCF is 1.
The GCF is 42.
The answer is 21
It is: 14
It is: 30
21
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