LCM( 22, 3, 25, 4 ) = 3300
Step 1: Write down factorisation of each number:
22 = 2 · 11
3 = 3
25 = 5 · 5
4 = 2 · 2
Step 2 : Match primes vertically:
22 | = | 2 | · | 11 | ||||||||
3 | = | 3 | ||||||||||
25 | = | 5 | · | 5 | ||||||||
4 | = | 2 | · | 2 |
Step 3 : Bring down numbers in each column and multiply to get LCM:
22 | = | 2 | · | 11 | ||||||||||
3 | = | 3 | ||||||||||||
25 | = | 5 | · | 5 | ||||||||||
4 | = | 2 | · | 2 | ||||||||||
LCM | = | 2 | · | 2 | · | 3 | · | 5 | · | 5 | · | 11 | = | 3300 |