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: In an examination, 32% candidates failed in one subject and 42% failed in another subject while 15% failed in both the subjects. If 2500 candidates appeared at the end of the examination how many passed in either subject but not in both?

 Option A: 975

 Option B: 1020

 Option C: 1100

 Option D: 1243

 Option E: 1525
Option C

Question: The least number of complete years in which a sum of money put out at 20% C.I. will be more than doubled is?

 Option A: 3

 Option B: 4

 Option C: 9

 Option D: 3

 Option E: 5
Option B

Question: If n = 2lk, where l and k are distinct prime numbers greater than 2, how many different positive even divisors does n have, including n ?

 Option A:  Two

 Option B:  Three

 Option C:  Four

 Option D:  Six

 Option E:  Eight

Option C