Part 1. 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.
Part 2. Example
From a pack of 52 cards, two cards are drawn together at random. What is the probability of both the cards being kings? 

 Option A:2/1223 

 Option B: 1/122 

 Option C: 1/221 

 Option D: 3/1253 

 Option E: 2/153 


Answer: Option C
Explanation: Let s be the sample space. 
 Then n(s) = 52C2 = 1326 
 E = event of getting 2 kings out of 4 
 n(E) = 4C2 = 6 
 P(E) = 6/1326 = 1/221
Part 3. Exercise
Question: On average, activated yeast cells divide once every 120 minutes; that is, each individual cell divides into two individual cells over that time span. Given that a certain yeast colony consisted of 310,000 cells two hours ago, approximately how many cells will be populating the colony twelve hours from now?

 Option A: 77,500

 Option B: 1,860,000

 Option C: 2,480,000

 Option D: 3,720,000

 Option E: 39,680,000
Answer:
Option E