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.

[Q]: Question: Look at this series: -2, 0, 2, 4,... What number should come next?

 Option A: 6

 Option B: 12

 Option C: 8

 Option D: 9

 Option E: 10
[A]: Option A


[Q]: Question: A group of boy scouts and girls scouts is going on a rafting trip. 45% of the scouts arrived with signed permission slips. If 60% of the scouts were boy scouts and 25% of the boy scouts arrived with signed permission slips, then what percentage of the scouts were girl scouts who arrived with signed permission slips?

 Option A: 20

 Option B: 21

 Option C: 25

 Option D: 28

 Option E: 30
[A]: Option E


[Q]: Question: If the probability Q of rain on any given day in city x is 50% what is the probability it with rain on exactly 3 days in a five day period?

 Option A: 8/125

 Option B: 2/25

 Option C: 5/16

 Option D: 8/25

 Option E: 3/4
[A]:
Option C