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: On dividing 21 by a number, the quotient is 10 and the remainder is 1. Find the divisor.

 Option A: 1

 Option B: 2

 Option C: 4

 Option D: 6

 Option E: 7

Answer: Option B


Question: Question: If 3^x*4^y = 1,594,323 and x – y = 13, then x = ?

 Option A: 10

 Option B: 11

 Option C: 12

 Option D: 13

 Option E: 14

Answer: Option D


Question: Question: A car is traveling 75 kilometers per hour. How many meters does the car travel in one minute?

 Option A: 1,250 meters / minute

 Option B: 1,350 meters / minute

 Option C: 1,450 meters / minute

 Option D: 1,550 meters / minute

 Option E: 1,650 meters / minute

Answer:
Option A