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: For all integers x>1. <x>=2x+(2x-1)+(2x-2)+......2+1. What is the value of <2>*<4>?

 Option A:  60

 Option B:  116

 Option C:  210

 Option D:  263

 Option E:  360

SOLUTION: Option E

PROBLEM: Question: If the least common multiple of two prime numbers x and y is 10, where x > y, then the value of 2x + y is

 Option A: 7

 Option B: 9

 Option C: 11

 Option D: 12

 Option E: 21

SOLUTION: Option D

PROBLEM: Question: Two pipes A and B together can fill a cistern in 4 hours. Had they been opened separately, then B would have taken 6 hours more than A to fill cistern. How much time will be taken by A to fill the cistern separately?

 Option A: 3

 Option B: 5

 Option C: 6

 Option D: 8

 Option E: 9

SOLUTION:
Option C