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.

[Q]: Question: find two integers, neither of which ends in a zero, and whose product is exactly 10,000

 Option A: 64 and 15,625

 Option B: 60 and 15,625

 Option C: 64 and 15,620

 Option D: 16 and 625

 Option E: 64 and 16,625
[A]: Option D


[Q]: Question: The LCM of two numbers is 2310 and HCF is 26. If one of the numbers is 210. Then what is the other number ?

 Option A: 715

 Option B: 825

 Option C: 286

 Option D: 582

 Option E: 465
[A]: Option C


[Q]: Question: 1: 3 = 1 2/3: x. The value of x is?

 Option A: 1

 Option B: 6

 Option C: 7

 Option D: 5

 Option E: 8
[A]:
Option D