1,3,1,2.5,5,1,4,5,4,8,7

• Ans=9.5
  (1+3+1=5 & 5/2=2.5),(5+1+4=10 & 10/2=5),(4+8+7=19 & 19/2=9.5)
• 12 years agoHelpfull: Yes(133) No(4)
• 1+3+1=5 and 5/2=2.5
  5+1+4=10 and 10/2
  in the same way.. 4+8+7=19 and 19/2=9.5 so the ans is 9.5
• 10 years agoHelpfull: Yes(3) No(0)
• answer is 1
  
• 12 years agoHelpfull: Yes(2) No(23)
• Ans:9.5 is write..
• 12 years agoHelpfull: Yes(2) No(2)
• +2 -2 +1.5 *2 -4 +3 +2 _4 +3 +2 so ans is 8
• 12 years agoHelpfull: Yes(1) No(14)
• 9.5 is i am correct yo
• 8 years agoHelpfull: Yes(1) No(0)
• next two nos. will be 13,7
• 12 years agoHelpfull: Yes(0) No(19)
• (1,3,1)=2.5 (5,1,4)=5 (4,8,7)=9.5
• 8 years agoHelpfull: Yes(0) No(0)
• sum of (1,3,1,2.5)=7.5
  (5,1,4,5)=15 ........(double of 7.5)
  (4,8,7,?) =30..........(double of 15)
  So answer is 11
• 8 years agoHelpfull: Yes(0) No(2)
• 9.8..
  1+3+1=5/2=2.5
  5+1+4=10/2=5
  4+8+7=19/2=9.8
• 7 years agoHelpfull: Yes(0) No(0)
• Answer:9.5
  
  1+3+2=5 .... 5/2=2.5
  5+1+4=10....10/2=5
  4+8+7=19....19/2=9.5
• 7 years agoHelpfull: Yes(0) No(0)