TASK DEFINITION: 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.
PROBLEM: Question: One side of a rectangular field is 15 m and one of its diagonals is 17 m. Find the area of the field in meter square

Option A: 100

Option B: 110

Option C: 120

Option D: 130

Option E: 140

SOLUTION: Option C

PROBLEM: Question: Kaushalya can do a work in 20 days, while kaikeyi can do the same work in 25 days. They started the work jointly.Few days later Sumitra also joined them and thus all of them completed the whole work in 10 days. All of them were paid total Rs.700. What is the Share of Sumitra?

Option A: Rs.130

Option B: Rs.185

Option C: Rs.70

Option D: can't be determined

Option E: None of these

SOLUTION: Option C

PROBLEM: Question: There are n cities. What is the number of airlines that connected 3 different cities (airline from city A to city B is different with airline from city B to city A)?

Option A: n(n-1

Option B: n(n+1

Option C: n(n-1

Option D: n(n+1

Option E: n(n-2

SOLUTION:
Option E