2,26.0,8.9,8.4,52.0,
17.8,16.8,104.0,?

• Ans is 35.6
  2*26=52,
  2*8.9=17.8,
  2*8.4=16.8,
  2*52=104,
  2*17.8=35.6
  
• 12 years agoHelpfull: Yes(33) No(2)
• {1st term not 2 it is 4.2}
  The Series is
  4.2, 26.0, 8.9, 8.4, 52.0, 17.8, 16.8, 104.0
  
  I {4.2, 26.0, 8.9}
  II {8.4 [ie 4.2+4.2] , 52.0, 17.8}
  III {16.8 [ie 8.4+8.4], 104.0, ?}
  
  Look at last terms I [8.9] II [17.8] III[?= 17.8 + 17.8]
  
• 11 years agoHelpfull: Yes(2) No(0)
• ans:8.9*2=17.6
  17.6*2=35.6
  
  so,35.6
• 11 years agoHelpfull: Yes(0) No(0)
• Ans : 35.6
  
  {1st term not 2 it is 4.2}
  The Series is
  4.2, 26.0, 8.9, 8.4, 52.0, 17.8, 16.8, 104.0
  
  I {4.2 , 26.0, 8.9}
  II {8.4 [ie 4.2+4.2] , 52.0, 17.8}
  III {16.8 [ie 8.4+8.4], 104.0, ?}
  
  Look at last terms I [8.9] II [17.8] III[?= 17.8 + 17.8 ==>35.6]
  
• 11 years agoHelpfull: Yes(0) No(0)