Question

Find the HCF of 12,45,75

Answer 1

Step-by-step explanation:

prime factorisation of :

12=2×2×3.

45=5×3×3.

75=5×5×3 .

hence common factor is 3,

so HCF =3

Answer 2

The HCF is 3

Step-by-step explanation:

Numbers are 12, 45 and 75

We are supposed to find the HCF of 12, 45 and 75

2 | 12        5 | 45       5 | 75

2 | 6         3 | 9          5 | 15

3 | 3         3 | 3           3 | 3

  | 1             | 1               | 1

$12 = 2 \times 2 \times 3$

$45 = 5 \times 3 \times 3$

$75 = 5 \times 5 \times 3$

HCF = 3

Hence The HCF is 3

#Learn more:

Find the HCF by Prime factorization method

i) 90,120,150 ii) 91,112and49 iii)70,105,175 iv)12,45,75​

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