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: Find the odd one out:
125, 106, 85, 76, 65, 58, 53

 Option A: 33

 Option B: 85

 Option C: 26

 Option D: 18

 Option E: 222
Option B

Question: For any positive integer Y, the sum of the first Y positive integers equals Y(Y+1)/2 . If X and Y are positive integers and X > Y, what is the sum of all the integers between X and Y, inclusive?

 Option A:  X(X+1

 Option B:  X(X+1

 Option C:  X(X+1

 Option D:  X(X+1

 Option E:  X(Y+1
Option B

Question: A tap can fill a tank in 8 hours. After half the tank is filled, three more similar taps are opened. What is the total time taken to fill the tank completely?

 Option A: 5 hr

 Option B: 1 hr 30 min

 Option C: 2 hr 30 min

 Option D: 2 hr

 Option E: 4 hr

Option A