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.
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Question: Question: A certain car dealership offers its newest model in ten exterior and six interior colors. If the ten interior colors are identical to the ten exterior colors, and the dealership sells every pair of colors except those that would result in a car with an identically colored interior and exterior, how many different color combinations are possible?

 Option A: 45

 Option B: 81

 Option C: 90

 Option D: 10!/2!

 Option E: 36

Answer: Option E


Question: Question: On what dates of April, 2001 did Wednesday fall?

 Option A: 1st, 8th, 15th, 22nd, 29th

 Option B: 2nd, 9th, 16th, 23rd, 30th

 Option C: 3rd, 10th, 17th, 24th

 Option D: 4th, 11th, 18th, 25th

 Option E: None of these

Answer: Option D


Question: Question: A rectangular field has area equal to 150 sq m and perimeter 50 m. Its length and breadth must be?

 Option A: 15 m, 12 m

 Option B: 15 m, 11 m

 Option C: 15 m, 20 m

 Option D: 15 m, 10 m

 Option E: 15 m, 11 m

Answer:
Option D