Question

Find the LCM of the following numbers by prime factorisation method.
i. 12 and 15
ii. 15 and 25
iii. 14 and 21​

Answer 1

Answer:

hope this answer helps

Answer 2

Answer:

1. 60, 2. 75, 3. 42

Step-by-step explanation:

1. 12 and 15 both are divisible by 3 . So, 12*3 and 15*3 = 60. So LCM of 12 and 15 is 60.

2. 15 and 25 both are divisible by 5 . So, 15*5 and 25*3 = 75. So LCM of 15 and 25 is 75.

3. 14 and 21 both are divisible by 7 . So, 14*3 and 21*2 = 42. So LCM of 14 and 21 is 42.