Question

Witch number is a common factor of 25 and 40?
A) 2
B) 4
C) 5
D) 10

I will give Brainlyest only for correct answers. :)

Answer 1

The answer I think is C) 5

Answer 2

Answer:

The answer is 5.

Step-by-step explanation:

The answer is 5 because 5x8 and 5x5.  find the greatest common factor by matching the biggest common factor of 25 and 40.This is why the answer is 5.

Step 1: 25 = 5$^2$

Step 2: 40 = $2^{3}$ × $5^{1}$

Step 3: List of positive integer factors of 25 that divides 25 without a remainder. That is 1 and 5

Step 4: List of positive integer factors of 40 that divides 25 without a remainder. 1, 2, 4, 5, 8, 10, 20

Step 5: We found the factors and prime factorization of 25 and 40. The biggest common factor number is the GCF number.

So the greatest common factor 25 and 40 is 5.