Question

1.find the LCM of 12 and 18 2.find the LCM of 24 and 90 3.find the LCM of 40,48 and 45 4.find the LCM of 20,25 and 30

Answer 1

OK mate here is your answer.......

I am using prime factorization method to find the lcm......

Lcm of 12 and 18 =36

Lcm of 24 and 90 =360

Lcm of 40 , 48 , 45 = 720

Lcm of 20 , 25 , 30 = 300

If it helps then mark me as brainliest.....

Be Brainly......

Answer 2

$\bf\purple{QuestioN:-}$

1. Find the LCM of 12 and 18

2. Find the LCM of 24 and 90

3. Find the LCM of 40,48 and 45

4. Find the LCM of 20,25 and 30

$\bf\green{AnsweR:-}$

$\Large\pink\pmb{1.~LCM~of~12~and~18}$

:⇒ 12 = 2 × 2 × 3

:⇒ 18 = 2 × 3 × 3

ie,

LCM = 2 × 2 × 3 × 3

        = 36

$\Large\pink\pmb{2.~LCM~of~24~and~90}$

:⇒ 24 = 2 × 2 × 2 × 3

:⇒ 90 = 2 × 3 × 3 × 5

ie,

LCM = 2 × 2 × 2 × 3 × 3 × 5

        = 360

$\Large\pink\pmb{3.~LCM~of~40,~48~and~45}$

:⇒ 40 = 2 × 2 × 2 × 5

:⇒ 48 = 2 × 2 × 2 × 2 × 3

:⇒ 45 = 3 × 3 × 5

ie,

LCM = 2 × 2 × 2 × 2 × 3 × 3 × 5

       = 720

$\Large\pink\pmb{4.~LCM~of~20,~25~and~30}$

:⇒ 20 = 2 × 2 × 5

:⇒ 25 = 5 × 5

:⇒ 30 = 2 × 3 × 5

ie,

LCM = 2 × 2 × 3 × 5 × 5

       = 300

Happy Learning!!