Question

Find a common factor

(A) 8,20

(B) 9,15

Answer 1

Given: Two terms (A) 8, 20  (B) 9, 15

To find: The common factor.

Solution:

• Now we have given terms as :

      (A) 8, 20

              Factors of 8 = 2 x 2 x 2

              Factors of 20 = 2 x 2 x 5

              Common factor: 2 x 2 = 4

      (B) 9, 15

              Factors of 9 = 3 x 3

              Factors of 15 = 3 x 5

              Common factor: 3

Answer:

           So the common factors are: (A) : 4 , (B) : 3

Answer 2

$\textbf{Given:}$

$(a)8\;\text{and}\;20$

$(b)9\;\text{and}\;15$

$\textbf{To find:}$

$\text{Common factor of given numbers}$

$\textbf{Solution:}$

$\text{Common factor of any two given numbers}$

$\text{can be found by prime factorization method}$

$(A)$

$\text{Consider,}$

$8=\boxed{2{\times}2}{\times}2$

$20=\boxed{2{\times}2}{\times}5$

$\therefore\,\textbf{Common factor}=\bf\,2{\times}2=4$

$(B)$

$\text{Consider,}$

$9=\boxed{3}{\times}3$

$15=\boxed{3}{\times}5$

$\therefore\,\textbf{Common factor}=\bf\,3$

Find more:

Find the ratio between HCF and LCM of 10 15 and 20

https://brainly.in/question/15064394

Find the greatest number that divides 3128 and 420 ​

https://brainly.in/question/15327150

Find hcf of 144, 96, 54 by prime factorisation

https://brainly.in/question/2132704

Find the HCF of 252525 and 363636​

https://brainly.in/question/11206176