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: There r 4 prime numbers in ascending order. The multiplication of first 3 is 385 and that of last 3is 1001. what is the last number is

 Option A: 12

 Option B: 15

 Option C: 16

 Option D: 13

 Option E: 18

SOLUTION: Option D

PROBLEM: Question: A rectangular plot measuring 90 metres by 50 metres is to be enclosed by wire fencing. If the poles of the fence are kept 10 metres apart, how many poles will be needed ?

 Option A: 28

 Option B: 56

 Option C: 57

 Option D: 58

 Option E: None of these

SOLUTION: Option A

PROBLEM: Question: Which of the following represents the profit from the investment of x dollars at n percent compound annual interest for 2 years?

 Option A: 5x (1+n/100

 Option B: 2x (1+n/100

 Option C: 3x (1+n/100

 Option D: x (1+n/100

 Option E: x (1+n/100

SOLUTION:
Option D