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: you have been given a physical balance and 7 weights of 40, 42, 36, 33, 47, 52 and 67 kgs. keeping weights on one pan and object on the other, what is the maximum you can weigh less than 169 kgs.
Options: a. 163, b. 166, c. 162, d. 164, e. 165

Answer: e


Question: Problem: there is one 4 - digit whole number n, such that the last 4 digits of n 2 are in fact the original number n
Options: a. 8476, b. 7376, c. 9376, d. 7378, e. 9466

Answer: c


Question: Problem: a company recently conducted a survey and found that 40,000 of its customers live in rural areas. if the number of customers who live in urban areas is 137 percent greater than the number of customers who live in rural areas, how many customers live in urban areas ?
Options: a. 90,000, b. 91,200, c. 92,400, d. 93,600, e. 94,800

Answer:
e