Find the LCM of 12, 18, 30?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 180.
Find LCM using prime factorization:
12 = 22 × 3
18 = 2 × 32
30 = 2 × 3 × 5
Take the highest powers of each prime: 22, 32, 5
LCM = 22 × 32 × 5 = 4 × 9 × 5 = 180
22 × 32 × 5 = 4 × 9 × 5 = 180