4 6 9 13.5 20.25 30.375 ???

• 4*1.5=6,
  6*1.5=9,
  9*1.5=13.5,
  13.5*1.5=20.25 ,
  20.25 *1.5 =30.375,
  hence it will give 30.375*1.5= 45.5625
  Answer: Option: 1) 45.5625
• 9 years agoHelpfull: Yes(4) No(0)
• 45.5625
  
  Explanation:
  4 + 2 = 6
  
  6 + 3 = 9
  here 3 is (3/2)*(2) = 3
  
  9 + 4.5 = 13.5
  here 4.5 is (3/2)*(3) = 4.5
  
  13.5 + 6.75 = 20.25
  here 6.75 is (3/2)*(4.5) = 6.75
  
  20.25 + 10.125 = 30.375
  here 10.125 is (3/2)*(6.75) = 10.125
  
  30.375 + 15.1875 = 45.5625
  here 15.1875 is (3/2)*(10.125) = 15.1875
  
  Hence (n-1)th number + (3/2)*[(n-1)th number - (n-2)th number] = nth number
• 12 years agoHelpfull: Yes(2) No(3)