The LCM of two numbers is 1890 and their HCF is 30. If one of them is 270, the other will be

Answer: Option A

HCF of the numbers × LCM of the numbers = Multiplication of the numbers
Or, 30 × 1890 = 270 × N
Or, N = $$30\times \frac{1890}{270}$$
Or, N = 210