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.

[EX Q]: Question: In the arithmetic sequence t1, t2, t3, ..., tn, t1=23 and tn= tn-1 - 3 for each n > 1. What is the value of n when tn = 8?

 Option A: -1

 Option B: 6

 Option C: 10

 Option D: 14

 Option E: 20
[EX A]: Option B

[EX Q]: Question: In a bag, there are coins of 25 p, 10 p and 5 p in the ratio of 1 : 2 : 3. If there is
Rs. 30 in all, how many 5 p coins are there?

 Option A: 150

 Option B: 130

 Option C: 120

 Option D: 110

 Option E: 140
[EX A]: Option A

[EX Q]: Question: Find the odd man out
444, 300, 200, 136, 87, 84, 80

 Option A: 80

 Option B: 87

 Option C: 136

 Option D: 200

 Option E: 444
[EX A]:
Option B