Question

find the hcf of 18,24,42​

Answer 1

First find all factors of the given numbers individually.

Factors of 18 = 1, 2, 3, 6, 9, 18

Factors of 24 = 1, 2, 3, 4, 6, 8, 12, 24

Factors of 42 = 1, 2, 3, 6, 7, 14, 21, 42

Therefore, common factors of 18, 24 and 42 are 1, 2, 3 and 6.  

HCF of 18, 24 and 42 is 6.

Answer 2

The HCF of 18,24,42 is 6.

Step-by-step explanation:

Given : Numbers 18,24,42.

To find : The HCF of numbers ?

Solution :

First we factoring the numbers,

$18=2\times 3\times 3$

$24=2\times 2\times 2\times 3$

$42=2\times 3\times 7$

$HCF(18,24,42)=2\times 3$

$HCF(18,24,42)=6$

Therefore, the HCF of 18,24,42 is 6.

#Learn more

Find lcm amd hcf of 18,24,54 by prime factorisation​

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