If the number 1/6, 2/9, 1/18, 1/12, and 2/3  were ordered from greatest to least, the middle number of the resulting sequence would be
                            
                         
                        
                            
                        
                             
                            
                            
                            
                                Explanation
                            
                                
                                    Answer: A- Before comparing fractions, their denominators should be made same. The denominators 6, 9, 18, 12 and 3 have LCM = 36. We convert the fractions all with 36 as denominator.
6/36, 8/36, 2/36, 3/36, 24/36
Now arrange the series from greatest to lowest value of their numerators:
24/36, 8/36, 6/36, 3/36, 2/36
The middle number of the resulting sequence is 6/36 = 1/6
Key takeaway: Before comparing fractions, their denominators should be made same. Then arrange the series in ascending order as per the numerators.