The L.C.M of two numbers is 2310 and their H.C.F is 30. If one number is 210 the Other is  Choices.
A) 330
B) 300
C) 270
D) 250
E) 350

Rationale: "the other number = l . c . m * h . c . f / given number = 2310 * 30 / 210 = 330 answer is a ."
Answer: A