Aptitude Hack#46(10-4-19)

Question:

Find out the wrong number in the given sequence of numbers.
36, 54, 18, 27, 9, 18.5, 4.5

A) 4.5

B) 18.5
  
C) 54

D) 18

 Answer: B) 18.5
Explanation:
The terms are alternatively multiplied by 1.5 and divided by 3. However, 18.5 does not satisfy it.