4.2,26.0,8.9,8.4,52.0,17.8,16.8,104.0

• (4.2,26.0,8.9),(8.4,52.0,17.8),(16.8,104.0,?)
  
  multiply by 2 in respective positions so 17.8*2= 35.6 is the answer
  
  
• 11 years agoHelpfull: Yes(61) No(0)
• next no will be 35.6
  as
  see the no between 26.0 and 52.0 which is 8.9 and 8.4
  
  next no is 17.8
  which 8.9*2=17.8
  8.4*2=16.8
  
  so next no will be 17.8*2=35.6
• 11 years agoHelpfull: Yes(7) No(1)
• (4.2, 8.4, 16.8)
  (26.0, 52, 104)
  (8.9, 17.8, ?)
  
  4.2*2=8.4, 8.4*2=16.8
  26*2=52, 52*2=104
  8.9*2=17.8, 17.8*2=35.6
  therefore ans= 35.6
• 11 years agoHelpfull: Yes(6) No(0)
• 35.5, there r 3groups
• 11 years agoHelpfull: Yes(5) No(2)
• (4.2,26.0,8.9),(8.4,52.0,17.8),(16.8,104.0,?)
  4.2,26,8.9 so
  8.9-0.1=8.8 i,e
  8.8+4.2=13 // add with 1st value
  13*2=26 mid //mul with 2
  
  8.4,52.0,17.8 so
  17.8-0.2=17.6
  17.6+8.4=26
  26*2=52
  
  16.8,104.0,? so
  x-0.3=?.....eq1
  104/2=52
  52-16.8=35.2
  35.2 // put in eq1
  35.2+0.3=x
  x=35.5
  
• 11 years agoHelpfull: Yes(1) No(0)
• Here, every 4th term is double of the latter as if 4th term 8.4 = 2 * 4.2 (4.2 being the 1st term) and the same is followed throughout .... S, the 9th term would be 2 * 6th term = 35.6.
• 11 years agoHelpfull: Yes(1) No(0)
• There are 3 series:
  (i) 4.2 , 8.4 , 16.8 , ........ its a G.P. with r==2
  (ii) 26.0 , 52.0 , 104.0 , .....its a G.P. with r==2
  (iii)8.9 , 17.8 , ....its a G.P. with r==2
  And our answer will be a part of the (iii) series so 17.8 * 2 = 35.6
  Hence , answer = 35.6
  Hope you got it
• 11 years agoHelpfull: Yes(1) No(0)