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: Find the average of all prime numbers between 4 and 15.

 Option A: 30

 Option B: 4

 Option C: 9

 Option D: 8

 Option E: None

Answer: Option C


Question: Question: The length of a rectangular landscape is 4times its breadth. There is a playground in it whose area is 1200 square mtr & which is 1/3rd of the total landscape. What is the length of the landscape?

 Option A: 100

 Option B: 110

 Option C: 120

 Option D: 140

 Option E: 150

Answer: Option C


Question: Question: A pipe takes a hours to fill the tank. But because of a leakage it took 6 times of its original time. Find the time taken by the leakage to empty the tank

 Option A: 50 min

 Option B: 60 min

 Option C: 72 min

 Option D: 80 min

 Option E: 70 min

Answer:
Option C