Find the LCM as a product of prime numbers

Question 1:

A = 3× 5 2 B = 5 3

LCM = 3× 5 3

Question 2:

A = 2 2 ×3×5 B = 2× 3 2 ×5

LCM = 2 2 × 3 2 ×5

Question 3:

A = 2 5 ×3 B = 2 2 ×3×5

LCM = 2 5 ×3×5

Question 4:

A = 3 4 B = 2× 3 3

LCM = 2× 3 4