1 and 2 are the common factors of 8 and 10.
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the only common factor is 1 20 40 2 8 4 10 all have common factors of 2 20 40 10 5 all have common factors of 5
All their common factors are: 1, 2, 4, 8 & 16
The common factors are: 1, 2, 4, 8.
2
The highest common factor (HCF) of 7, 8, and 10 is 1. This is because the only factor that these three numbers share is 1, as 7, 8, and 10 do not have any other common factors. Therefore, the HCF of 7, 8, and 10 is 1.