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: A and B complete a work in 6 days. A alone can do it in 10 days. If both together can do the work in how many days?

Option A: 3.75

Option B: 3.76

Option C: 3.79

Option D: 3.74

Option E: 3.71
answer:
Option A

question:
Question: If 5 ministers are to be seated at a round table conference, then how many different ways can they be seated?

Option A: 240

Option B: 60

Option C: 24

Option D: 720

Option E: 180
answer:
Option C

question:
Question: The length of a room is 7 m and width is 4.75 m. What is the cost of paying the floor by slabs at the rate of Rs. 900 per sq. metre.

Option A: 25650

Option B: 25750

Option C: 26550

Option D: 26750

Option E: 29925
answer:
Option E