What is the missing number in this series?
8 2 14 6 11 ? 14 6 18 12

• ans is 9
  (1st + last) = (2nd + 2nd last)....so on
  so, 8+12 = 2+18 = 14+6..... = 20
  11+9 = 20
  so, 9 is the answer
• 10 years agoHelpfull: Yes(68) No(1)
• 8+12=20
  2+18=20
  14+6=20
  6+14=20
  Hence 11 + x = 20
  Therefore x=9
  The answer is 9
• 10 years agoHelpfull: Yes(5) No(0)
• we can also find by taking the difference.
  2-8=-6
  14-2=12
  6-14=-8
  11-6=5
  6-14=-8
  18-6=12
  12-18=-6
  difference at end and first two is -6
  so at end reverse series occur
  so diff should be 5
  14-5=9
  
• 10 years agoHelpfull: Yes(2) No(5)
• 8-2=6
  14-6=8
  11-x=6
  14-6=8
  18-12=6
  therefore x=5
• 10 years agoHelpfull: Yes(2) No(4)
• answer is 9
• 10 years agoHelpfull: Yes(0) No(2)
• answer can be also 17
  since 8 and 2 difference is 6
  then 14 and 6 repeated
  then 11 and 17 diff is 6
  14 6 repeated
  then 18 12 difference is 6
  
• 10 years agoHelpfull: Yes(0) No(3)
• 8-2=6
  18-12=6
  11-6=5
• 10 years agoHelpfull: Yes(0) No(0)
• 8+12=20
  2+18=20
  14+6=20
  .
  .
  11+?=20
  it is 9
• 10 years agoHelpfull: Yes(0) No(0)
• jkkkkkkkkkkkkkkk
• 10 years agoHelpfull: Yes(0) No(4)
• ans is 9
  as the sum of first n last no is 20
  second n second last is also 20
  hence 20-11=9
• 10 years agoHelpfull: Yes(0) No(0)
• 8+12=20
  2+18=20
  14+6=20
  6+14=20
  Hence 11 + x = 20
  Therefore x=9
  The answer is 9
  
• 10 years agoHelpfull: Yes(0) No(0)
• 5
  8-2=6;
  14-6=8;
  11-?=6
  14-6=8;
  18-12=6.
  ?=5
• 9 years agoHelpfull: Yes(0) No(0)
• 14 and 6 repeats at same interval...
  8-6=2 the second number
  18-6=12 last number
  similarly 11-6=5 the required number
  so ans in 5
• 9 years agoHelpfull: Yes(0) No(0)
• add first and last number u will get number >similiarly u add up 2 nd and last before number to get 20
  8+12=20
  2+18=20
  .....
  11+9=20
  so missing number is 20
• 8 years agoHelpfull: Yes(0) No(1)