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.
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Question: Question: A sum of Rs.4800 is invested at a compound interest for three years, the rate of interest being 10% p.a., 20% p.a. and 25% p.a. for the 1st, 2nd and the 3rd years respectively. Find the interest received at the end of the three years?

 Option A: Rs.3129

 Option B: Rs.3120

 Option C: Rs.3108

 Option D: Rs.3106

 Option E: Rs.3127

Answer: Option B


Question: Question: The difference between the place values of 7 and 3 in the number 527435 is

 Option A: 4

 Option B: 5

 Option C: 45

 Option D: 6970

 Option E: None

Answer: Option D


Question: Question: If the price of a TV is first decreased by 20% and then increased by 45%, then the net change in the price will be :

 Option A: 4% increase

 Option B: 10% increase

 Option C: 10% decrease

 Option D: 16% increase

 Option E: None of these

Answer:
Option D