Question

Find the hcf. Of 84 90 and 120

Answer 1

Answer:

6

Step-by-step explanation:

Hcf is equal to 6 .......

Answer 2

“2520 and 6 are the LCM and HCF” of the given numbers 84, 90, 120 respectively.

To find:

The LCM and HCF of 84, 90, and 120

Solution :

LCM means “Least Common Multiple”.

HCF means “Highest Common Factor”.

$factors \: of \: 84 \: = 2 \times 2 \times 3 \times 7$

$factors \: of \: 90 = 2 \times 3 \times 3 \times 5$

$factors \: of \: 120 = 2 \times 2 \times 2 \times 3 \times 5$

With the help of the factors, the LCM and HCF can be determined,

Hence LCM of 84 90 120 =

$2 \times 2 \times 2 \times 3 \times 3 \times 5 \times 7$

$= 8 \times 9 \times 35$

$= 2520$

Then, HCF of 84 90 120 =

$2 \times 3 = 6$

Hope this will help u!!