You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.

Question: When 52416 is divided by 312, the quotient is 168. what will be the quotient when 52.416 is divided by 0.168?

 Option A: 5

 Option B: 6

 Option C: 4

 Option D: 3

 Option E: 8
Option A

Question: If x is to be chosen at random from the set {1, 2, 3} and y is to be chosen at random from the set {5, 6, 7}, what is the probability that xy will be even?

 Option A:  1/6

 Option B:  1/3

 Option C:  1/2

 Option D:  2/3

 Option E:  5/6
Option E

Question: The tens digit of a two-digit number is two more than its unit digit. The two-digit number is 7 times the sum of the digits. Find the units digits?

 Option A: 1

 Option B: 2

 Option C: 6

 Option D: 8

 Option E: 7

Option B