TASK DEFINITION: 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.
PROBLEM: Question: (3x + 1) (2x - 5) = ax^2 + kx + n . What is the value of a - n + k ?

Option A: 5

Option B: 8

Option C: 9

Option D: 14

Option E: 11

SOLUTION: Option D

PROBLEM: Question: Jamboree and GMAT Club Contest Starts
QUESTION #10:
How many words (with or without meaning)F can be formed using all the letters of the word "SELFIE" so that the two E's are not together?

Option A: 660

Option B: 600

Option C: 500

Option D: 300

Option E: 240

SOLUTION: Option E

PROBLEM: Question: An engineer designed a ball so that when it was dropped, it rose with each bounce exactly one-half as high as it had fallen. The engineer dropped the ball from a 16-meter platform and caught it after it had traveled 32.5 meters. How many times did the ball bounce?

Option A: 2

Option B: 6

Option C: 7

Option D: 8

Option E: 9

SOLUTION:
Option A