Question

Find the LCM of 15and18

Answer 1

[AI-generated answer — Bot GPT 3.5]

The prime factors of 15 are 3 and 5, and the prime factors of 18 are 2, 3, and 3. To find the LCM, we need to take the highest power of each prime factor that appears in either number.

The prime factorization of 15 is 3 × 5, and the prime factorization of 18 is 2 × 3 × 3.

The LCM is 2 × 3 × 3 × 5 = 90.

Therefore, the LCM of 15 and 18 is 90.