Question

find the HCF of 30,75,90 by common division method​

Answer 1

Answer:

15

Step-by-step explanation:

Factors of 30 = 3*2*5

Factors of 75 = 3*5*5

Factors of 90 = 3*3*5*2

HCF =3*5

      = 15

Answer 2

Answer: 15

Concept: This question is from the topic 'HCF'. HCF stands for the highest common factor. It is the greatest or largest common factor of given numbers. We find HCF by using three methods

1. Factorization

2. Prime factorization

3. Common division method

Given: Three numbers 30,75,90

To find: Find HCF of 30,75,90 by using the common division method

Solution:

first, we divide 75 by 30

       30)75(2

            60

          --------

             15    ( HCF of 30 & 75)

Now 90 divided by 15

           15) 90( 6

                 90

              ---------

                   0

Hence HCF of 30,75, 90 is 15