In the following series one number is wrong. Find out the wrong one-

4 3 4.5 8.5 20 53 162.5

• wrong term = 8.5
  
  4 * .5 + 1 = 3
  3 * 1 + 1.5 = 4.5
  4.5 * 1.5 + 2 = 8.75
  8.75 * 2 + 2.5 = 20
  20 * 2.5 + 3 = 53
  53 * 3 + 3.5 = 162.5
  
  so series is 4 3 4.5 8.75 20 53 162.5
• 10 years agoHelpfull: Yes(10) No(0)