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: One computer can upload 100 megabytes worth of data in 2 seconds. Two computers, including this one, working together, can upload 1300 megabytes worth of data in 10 seconds. How long would it take for the second computer, working on its own, to upload 100 megabytes of data?

 Option A:  6.6

 Option B:  7

 Option C:  9

 Option D:  11

 Option E:  13
Option A

Question: The probability of a lottery ticket being a prized ticket is 0.2. When 4 tickets are purchased, the probability of winning a prize on atleast one ticket is

 Option A: 0.5928

 Option B: 0.5904

 Option C: 0.5297

 Option D: 0.5297

 Option E: 0.5101
Option B

Question: For what value of “k” will the equation (2kx2 + 5kx+2)=0 have equal roots?

 Option A: 2/7

 Option B: 9/4

 Option C: 16/25

 Option D: 7/1

 Option E: 7/2

Option C