5,1,2,8,8,1,0,9,9,2,3,?

• 14
  
  (5,1,2,8) , (8,1,0,9) , (9,2,3,x)
  1st bracket => 5 + 1 = 8 - 2
  2nd bracket => 8 + 1 = 9 - 0
  3rd bracket => 9 + 2 = x - 3 => x = 14
• 12 years agoHelpfull: Yes(36) No(2)
• first 3 element some makes forth elements
  
  5+1+2=8
  8+1+0=9
  9+2+3=14 is answer
• 11 years agoHelpfull: Yes(19) No(0)
• 5,1,2,8,8,1,0,9,9,2,3,?
  Make the pairs of 4's
  (5,1,2,8),(8,1,0,9),(9,2,3,x)
  i) 5+1+2=8
  ii) 8+1+0=9
  iii) 9+2+3=14
  so x= 14
• 11 years agoHelpfull: Yes(3) No(0)
• (5,1,2,8),(8,1,0,9),(9,2,3,?)
  
  5+1+2=8
  8+1+0=9
  9+2+3=14
  
  So answer is 14
• 11 years agoHelpfull: Yes(3) No(0)
• 14 is the answer.
  
  5,1,2,8........5+1+2=8
  8,1,0,9........8+1+0=9
  9,2,3,x........9+2+3=x .... therefore....x=14.
  
  it can also be solved as followed:::
  
  5,1,2,8........8-2-1=5
  8,1,0,9........9-0-1=8
  9,2,3,x........x-3-2=9 .... therefore....x=14.
• 11 years agoHelpfull: Yes(2) No(0)
• (5,1,2,8)(8,1,0,9)(9,2,3,x)
  8-5=1+2,9-8=1+0=1,x-9=2+3=5
  so ans is 5+9=14
• 11 years agoHelpfull: Yes(0) No(0)