Answer:5Step-by-step explanation:The GCF of 5 and 40 is 5. To calculate the greatest common factor of 5 and 40, we need to factor each number (factors of 5 = 1, 5; factors of 40 = 1, 2, 4, 5, 8, 10, 20, 40) and choose the greatest factor that exactly divides both 5 and 40, i.e., 5.
step-by-stepexplanation:factor each number (factors of 5 = 1, 5; factors of 40 = 1, 2, 4, 5, 8, 10, 20, 40) and choose the greatest factor that exactly divides both 5 and 40