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: Mr. Thomas invested an amount of 13,900 divided in two different schemes A and B at the simple interest rate of 14% p.a. and 11% p.a. respectively. If the total amount of simple interest earned in 2 years be 3508, what was the amount invested in Scheme B?

 Option A: 6400

 Option B: 6500

 Option C: 7200

 Option D: 7500

 Option E: None of these

SOLUTION: Option A

PROBLEM: Question: In how many ways, a committee of 5 members can be selected from
6 men and 5 ladies, consisting of 3 men and 2 ladies?

 Option A: 100

 Option B: 200

 Option C: 300

 Option D: 400

 Option E: 500

SOLUTION: Option B

PROBLEM: Question: Which of the following is a pair of co–primes?

 Option A: (16, 62

 Option B: (18, 25

 Option C: (21, 35

 Option D: (23, 92

 Option E: none

SOLUTION:
Option B