Question

What is the greatest common factor of 35 and 40?
a) 1
b) 5
c) 10
d) 15

Answer 1

The greatest common factor of 35 and 40 is 5, as it is the largest number that divides both without leaving a remainder.

Step-by-step explanation:

The greatest common factor (GCF) of two numbers is the largest number that divides both of them without leaving a remainder. In the case of 35 and 40, we list out the factors:

Upon reviewing these lists, we see that the largest factor that appears in both lists is 5. Therefore, the greatest common factor of 35 and 40 is 5.

Answer: b) 5