Question

hcf of 12 45 75
is ------------------------

Answer 1

The HCF of three numbers i.e HCF(12, 45, 75)=3  

Step-by-step explanation:

Given 3 numbers 12, 45 and 75

we have to find the HCF of above 3 numbers

we will find the HCF by prime factorization method

The factors are  

12=2 x 2 x 3

45=3 x 3 x 5

75=3 x 5 x 5

The highest common factor from the above these factors is 3

Hence, HCF(12, 45, 75)=3