Factors of 40: 1,2,4,5,8,10,20,40
1 x 40
2 x 20
4 x 10
5 x 8
Factors of 30: 1,2,3,5,6,10,15,30
1 x 30
2 x 15
3 x 10
5 x 6
Common factors: 1, 2 5, 10
10 is the highest common factor.
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No, 3 is not a factor of 40.
The Greatest Common Factor of 30, 40: 10
8
The highest common factor is 8.
The highest common factor (HCF) of 40 and 72 is the largest number that divides both 40 and 72 without leaving a remainder. To find the HCF, we need to identify the common factors of 40 and 72, which are 1, 2, 4, and 8. The highest common factor of 40 and 72 is 8.