Given a math problem with context and a question and 5 answer choices, the task is to provide the correct answer choice based on the problem. You must choose one of the given answer choices by letter: a, b, c, d, or e; anything else is invalid.

[Q]: Problem: a light flashes every 30 seconds, how many times will it flash in ? of an hour ?
Options: a. 550, b. 600, c. 650, d. 700, e. 120
[A]: e


[Q]: Problem: the lcm of two numbers is 2310 and hcf is 55. if one of the numbers is 210. then what is the other number ?
Options: a. 715, b. 825, c. 330, d. 605, e. 465
[A]: d


[Q]: Problem: if n = 2.0563 and n * is the decimal obtained by rounding n to the nearest hundredth, what is the value of n * – n ?
Options: a. - 0.0053, b. - 0.0003, c. 0.0007, d. 0.0037, e. 0.0153
[A]:
d