2, 3, 5, 9, 17, 33, 65

• 129
  diff 1,2,4,8,16,32,....64
  
  65+64=129
• 10 years agoHelpfull: Yes(37) No(0)
• Here the answer is 129.
  3-2=1
  5-3=2
  9-5=4
  17-9=8
  33-17=16
  65-33=32
  and now we need 64 for the next term so
  65+64=129
  and 129-65=64
  so answer is 129
• 10 years agoHelpfull: Yes(15) No(0)
• 2,3,5,9,17,33,65, 129
  2*2-1=3
  
  3*2-1=5
  
  5*2-1=9
  .
  .
  .
  65*2-1=129
  
  
• 10 years agoHelpfull: Yes(10) No(0)
• 2^0+1=2
  2^1+1=3
  2^2+1=5
  2^3+1=9
  2^4+1=17
  2^5+1=33
  2^6+1=65
  so next is 2^7+1=129.
• 10 years agoHelpfull: Yes(5) No(0)
• 129...
  solution
  2
  3=2+1
  5=3+2
  9=5+4
  17=9+8
  33=17+16
  65=33+32
  129=65+64
• 10 years agoHelpfull: Yes(2) No(0)
• 129
• 10 years agoHelpfull: Yes(1) No(1)
• 2=2*1
  3=2*1+1
  5=2*2+1
  9=2*4+1
  17=2*8+1
  33=2*16+1
  65=2*32+1
  129=2*64+1
  so, answer will be 129.
• 10 years agoHelpfull: Yes(1) No(0)
• 2+3+0=5
  3+5+1=9
  5+9+3=17
  9+17+7=33
  17+33+15=65
  33+65+31=129 ans
  
  here one more series is running
  i.e
  1,3,7,15,31
• 10 years agoHelpfull: Yes(1) No(0)
• 2+2^0=3
  3+2^1=5
  5+2^2=9
  9+2^3=17
  17+2^4=33
  33+2^5=65
  65+2^6=129
  so Ans:129
• 10 years agoHelpfull: Yes(1) No(1)
• 2*3=6-1=5
  2*5=10-1=9
  2*9=18-1=17
  2*17=34-1=33
  2*33=66-1=65
  2*65=130-1=129
• 10 years agoHelpfull: Yes(1) No(0)
• (powers(2^n)
  2+1=3
  3+2=5
  5+4=9
  9+8=17
  17+16=33
  33+32=65
  65+94=129
• 10 years agoHelpfull: Yes(0) No(0)
• 129
  2*2-1
  3*2-1
  .
  .
  .65*2-1=129
• 10 years agoHelpfull: Yes(0) No(0)
• 2+1=2, 3+2=5, 5+4=9, 9+8=17, 17+16=33, 33+32=65
• 10 years agoHelpfull: Yes(0) No(0)
• 129 is the answer
  2^0=1,2^1=2,2^2=4,......................2^6=64
  2+1=3,3+2=5,5+4=9,..................65+64=129
• 10 years agoHelpfull: Yes(0) No(1)
• 2+2^0=3
  3+2^1
  5+2^2
  ......65+2^6
  
• 10 years agoHelpfull: Yes(0) No(0)
• 129 is answer
  4*2+9=17
  8*2+17=33
  16*2+33=65
  similarly,
  32*2+65=129
• 10 years agoHelpfull: Yes(0) No(2)
• ans:129
  difference between numbers 2 and 3 =1
  3 and 5=2=>2*1
  5 and 9=4=>2*2
  9 and 17=8=>4*2
  so difference between 33 and 65 is 32=>16*2
  so next number should have a difference of 64 with 65 i.e next number will be 129
• 10 years agoHelpfull: Yes(0) No(0)
• 2,3,5,9,17,33,65,----------
  
  2+1=3
  3+2=5
  5+2^2=9
  9+2^3=17
  17+2^4=33
  33+2^5=65
  65+2^6=129........!!!!!
• 10 years agoHelpfull: Yes(0) No(0)
• ans is 129
  as given series 2,3,5,9,17,33,65
  diff b/t 1st tow no is 1=2^0
  then 3 and 5 diff is 2=2^1
  then in b/t 5 and 9 is 4=2^2
  
  in b/t 65 and 33 diff is 32=2^5
  hence next diff is 2^6=64
  hence next no is 64+65=129
• 10 years agoHelpfull: Yes(0) No(0)
• 2
  2+2^0=3
  3+2^1=5
  5+2^2=9
  9+2^3=17
  17+2^4=33
  33+2^5=65
  65+2^6=129
  so answer is 129
• 10 years agoHelpfull: Yes(0) No(0)
• 2+1=3
  3+2=5
  5+4=9
  9+8=17
  17+16=33
  33+32=65
  65+64=129
  
• 10 years agoHelpfull: Yes(0) No(0)
• diff gets doubles-->64+65=129
• 10 years agoHelpfull: Yes(0) No(0)
• 129
  2+2^0=3
  3+2^1=5
  5+2^2=9
  9+2^3=17
  17+2^4=33
  33+2^5=65
  65+2^6=129
  SO ANSWER IS 129
• 10 years agoHelpfull: Yes(0) No(0)
• 2+1=3
  3+2=5
  5+4=9
  9+8=17
  17+16=33
  33+32=65
  65+94=129
  
• 10 years agoHelpfull: Yes(0) No(0)
• next term in this series is:129
  this series is incremented by 1,2,4,8,16,32,64,...
• 10 years agoHelpfull: Yes(0) No(0)
• 129
  since
  2*2-1=3
  3*2-1=5
  5*2-1=9 and so on..
  65*2-1=129
  
• 10 years agoHelpfull: Yes(0) No(0)
• in this series there is gap double i.e., 1 then 2 then 4 then 8 and in last added 32 doubles i.e. 64 and answer becomes 129.
• 9 years agoHelpfull: Yes(0) No(0)
• 7) 5 17 35 65
  12 18 30
  3*4 3*6 3*10 3*16=48
  so the next no will be 65+48=113
  as the differnce between the sub series is of multiple of 2 like 3*4 n 3*6 is (6-4=2) and 3*10 n 3*6 is 4 and so on..
  
• 9 years agoHelpfull: Yes(0) No(0)
• 2+1=3, 3+2=5, 5+4=9, 9+8=17, 17+16=33, 33+32=65, 65+64=129. here we add 1, 2,2^2,2^3,2^4,2^5,2^6
• 9 years agoHelpfull: Yes(0) No(0)
• ans is 129
  2+1=3
  3+2=5
  5+4=9
  9+8=17
  17+16=33
  33+32=65
  65+64=129
  (2 nd term of each step is mul by 2)
• 9 years agoHelpfull: Yes(0) No(0)
• 129
  {(65*2)-1}
• 9 years agoHelpfull: Yes(0) No(0)
• 2+1=3
  3+2=5
  5+4=9
  9+8=17
  17+16=33
  33+32=65
  65+64=129
  ans.129
• 9 years agoHelpfull: Yes(0) No(0)
• 2 + 3 + 2^0 - 1 = 5
  
  3 + 5 + 2^1 - 1 = 9
  
  5 + 9 + 2^2 - 1 = 17
  
  9 + 17 + 2^3 - 1 = 33
  
  17 + 33 + 2^4 - 1 = 65
• 8 years agoHelpfull: Yes(0) No(0)
• 2*2-1=3
  3*2-1=5
  .....
  65*3-1=129
• 7 years agoHelpfull: Yes(0) No(0)
• 129
  2+2^0 = 3 + 2^1 = 5 + 2^2 = 9 + 2 ^ 3 = 17 ...
• 6 years agoHelpfull: Yes(0) No(0)
• answer 129
  2*2-1=2
  3*2-1=5
  5*2-1=9
  9*2-1=17
  33*2-1=65
  65*2-1=129.
• 6 years agoHelpfull: Yes(0) No(0)
• the gap is in the sequence 2^0 ,2^1 with an addition along the previous number and so on so at the end 2^6 =64 +65= 129
• 5 years agoHelpfull: Yes(0) No(0)