108 , 54 , 36 ,18 , 9 , 6 , 4 54 36 18 9 The given series is in the below patter

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Home ‣ Verbal Reasoning ‣ Number Series See What Others Are Saying!

Question
108 , 54 , 36 ,18 , 9 , 6 , 4
Options
A. 54
B. 36
C. 18
D. 9

Correct Answer

9

Explanation

The given series is in the below pattern,we can see that
Next term = Previous term � n { putting n = 2 and 1.5 alternately }
First term = 108
Second term = First term � 2
? Second term = 108 � 2 = 54 ;
Third term = Second term � 1.5
? Third term = 54 � 1.5 = 36 ;
Third term = Third term � 2
? Fourth term = 36 � 2 = 18 ;
Fifth term = Fourth term � 1.5
? Fifth term = 18 � 1.5 = 9 is wrong. It should be 12.
Sixth term = Fifth term � 2
? Sixth term = 12 � 2 = 6 ;
Seventh term = Sixth term � 1.5
? Seventh term = 8 � 1.5 = 4
Hence, 9 is wrong. It should be 12.