Q. What is the next number of the following sequence
7, 4, 5, 9, 20, 52.5, ?

• 7*0.5+0.5=4
  4*1+1=5
  5*1.5+1.5=9
  9*2+2=20
  20*2.5+2.5=52.5
  52.5*3+2.5=160.5
  
• 11 years agoHelpfull: Yes(3) No(0)
• Last line is 52.5*3+3=160.5
• 11 years agoHelpfull: Yes(1) No(0)
• 7*0.5+0.5=4
  4*1+1=5
  5*1.5+1.5=9
  9*2+2=20
  20*2.5+2.5=52.5
  52.5*3+2.5=160.5
  
• 10 years agoHelpfull: Yes(1) No(0)
• 7*0.5= 3.5+0.5= 4
  4*1+1= 5
  5*1.5+1.5= 9
  9*2+2= 20
  20*2.5+2.5= 52.5
  52.5*3+3= 160.5
• 10 years agoHelpfull: Yes(1) No(0)
• If We multiplying the subsequent terms by 0.5,1,1.5,2 & So on,we get
  52.5*3+3=160.5
• 10 years agoHelpfull: Yes(0) No(0)
• 160.5
  7 x .5 + .5 = 4
  4 x 1 + 1 = 5
  5 x 1.5 + 1.5 = 9
  .
  .
  .
  52.5 x 3 + 3 = 160.5
• 7 years agoHelpfull: Yes(0) No(0)
• Last line is 52.5*3+3=160.5
• 7 years agoHelpfull: Yes(0) No(0)