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 class of 100 students, 50 speak Hindi and 70 speak English. What is the lowest possible number of students who
speak both the languages?

 Option A: A

 Option B: B

 Option C: C

 Option D: D

 Option E: E
[EX A]: Option C

[EX Q]: Question: In measuring the sides of a rectangle, one side is taken 6% in excess, and the other 5% in deficit. Find the error percent in the area calculated from these measurements.

 Option A: 0.11%

 Option B: 0.7%

 Option C: 0.4%

 Option D: 0.6%

 Option E: 0.8%
[EX A]: Option B

[EX Q]: Question: A committee of three people is to be chosen from four teams of two. What is the number of different committees that can be chosen if no two people from the same team can be selected for the committee?

 Option A: 20

 Option B: 22

 Option C: 26

 Option D: 30

 Option E: 32
[EX A]:
Option E