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: If the perimeter of a rectangular garden is 600 m, its length when its breadth is 100 m is?

 Option A: 299 m

 Option B: 777 m

 Option C: 200 m

 Option D: 167 m

 Option E: 128 m
answer:
Option C


question:
Question: The greatest number of four digits which is divisible by 15, 25, 40 and 75 is:

 Option A: 9400

 Option B: 9600

 Option C: 9800

 Option D: 9000

 Option E: 9200
answer:
Option B


question:
Question: If 1/2 of the air in a tank is removed with each stroke of a vacuum pump, what fraction of the original amount of air has been removed after 5 strokes ?

 Option A: 31/32

 Option B: 7/8

 Option C: 1/4

 Option D: 1/8

 Option E: 1/16
answer:

Option A