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.
--------
Question: Problem: find the greatest number which leaves the same remainder when it divides 16, 46 and 82.
Options: a. 18, b. 8, c. 12, d. 16, e. none of these

Answer: e


Question: Problem: income and expenditure of a person are in the ratio 7: 6. if the income of the person is rs. 14000, then find his savings ?
Options: a. 500, b. 1000, c. 1500, d. 2000, e. 2500

Answer: d


Question: Problem: in what time will a railway train 40 m long moving at the rate of 36 kmph pass a telegraph post on its way ?
Options: a. 3 sec, b. 4 sec, c. 5 sec, d. 6 sec, e. 7 sec

Answer:
b