15,14,14,16,22,__,__

• note differences of num leading the num...further note difference of differences
  15,14,14,16,22,_,_
  -1 0 2 6
  1 2 4
  clearly the next one sud be 8 an then 16
  n hence like this
  15,14,14,16,22,36,66
  -1 0 2 6 14 30
  1 2 4 8 16
• 12 years agoHelpfull: Yes(2) No(1)
• 15,14,14,16,22,9,39
  
  It is a series in which the
  a-first 2 nos add to 29; b-next 2 to 28; a-next 2 to 30, b-next 2 to 38.....
  
  'a' series increases by 1. 'b' series increases by 10.
  
  6th no in the original series would be 31-22 = 9
  7th no in the original series would be 48-9 = 39
  
  
  
• 12 years agoHelpfull: Yes(0) No(0)
• consider the odd pair and even pair,
  i) 15,14,22
  now the difference is -1,8 hence the nxt series would be 21
  ii) 14,16
  the difference is 2 hence nxt series is 18
  correct series 15,14,14,16,22,18,21
  
• 11 years agoHelpfull: Yes(0) No(0)