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: What does the hexa number E78 in radix 7.

 Option A: 12455

 Option B: 14153

 Option C: 14256

 Option D: 13541

 Option E: 14541
Option D

Question: 5 men are equal to as many women as are equal to 8 boys. All of them earn Rs.210 only. Menâ€™s wages are?

 Option A: 6Rs

 Option B: 2Rs

 Option C: 4Rs

 Option D: 9Rs

 Option E: 14Rs
Option E

Question: Find the value of 2 x [(3.6 x 0.48 x 2.50) / (0.12 x 0.09 x 0.5)]

 Option A: 800

 Option B: 500

 Option C: 900

 Option D: 1600

 Option E: None

Option D