What is the next number of the following sequence
2, 5, 9, 1, 5, 10, 3, 8,... ?

• 2,5,9,1,5,10,3,8 ?
  (2,5,9),(1,5,10),(3,8,x)
  
  2+(3)=5, 5+(4)=9
  1+(4)=5, 5+(5)=10
  3+(5)=8, 8+(6)=14
  
  x=14
• 10 years agoHelpfull: Yes(32) No(2)
• 5-2=3, 3+6=9
  5-1=4, 4+6=10
  8-3=5, 5+6=11
• 10 years agoHelpfull: Yes(3) No(1)
• (2+5)+2=9
  (1+5)+4=10
  (3+8)+6=17 (ans)
• 10 years agoHelpfull: Yes(3) No(3)
• 14 is the ans..
• 10 years agoHelpfull: Yes(1) No(0)
• 2+3=5,5+4=9,9-8=1,1+4=5,5+5=10,10-7=3,3+5=8,8+6=14
  the increment of series is in the format of +3,+4,+4,+5,+5,+6
  so ans is 14
• 10 years agoHelpfull: Yes(1) No(0)
• next no is 14
  diff b/w no are=2 5 9 1 5 10 3 8 14
  3 4 8 4 5 7 5 6
  ans is=(8+6)=14
• 10 years agoHelpfull: Yes(0) No(4)
• another way of doing diz series wuld be like
  (2,5,9),(1,5,10),(3,8,_)
  if u observe the series carefully,just see the last 2 numbers of every group of 3
  in 1st one from 5 to 9 -difference of 4
  in 2nd one from 5 to 10-difference of 5
  so in the 3rd one it wuld be from 8 to 14-difference of 6...
  so differences r increasing by 1 ...
  so ans is 6 ....
  this wuld save a lot of time in exam ..as u got just 2.15 mins for every ques in ibm writtern ...
• 10 years agoHelpfull: Yes(0) No(1)
• (2+5+9),(9+1+5),(3+8+x)=(16,16,16)
  i.e (3+8+3)=(16)
  x=3
• 9 years agoHelpfull: Yes(0) No(3)