instruction:
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:
Question: Bat is bought for Rs.400 and sold at a gain of 20% find its selling price?

 Option A: Rs.320

 Option B: Rs.350

 Option C: Rs.370

 Option D: Rs.480

 Option E: None of these
answer:
Option D


question:
Question: (700 + 200) Ã— 4 Ã— (4 + 2) = ?

 Option A: 24500

 Option B: 21600

 Option C: 36600

 Option D: 22400

 Option E: 12500
answer:
Option B


question:
Question: The product of all the prime numbers less than 14 is closest to which of the following powers of 10 ?

 Option A:  10^4

 Option B:  10^8

 Option C:  10^7

 Option D:  10^6

 Option E:  10^5
answer:

Option A