Q. What is the next number of the following sequences
1. 2,3,10,26,?
2. 3,4,12,76,588,?5,16,22,68,28,87,106,?
3. -3,-4,-9,-28,?
4. 34,4,21,59,43,3,20,66,12,2,16,?

• ans for 5,16,22,68,28,87,106,?
  make a group of two nos each starting from left side i.e. {(5,16),(22,68),(28,87),(106,?)}
  5,16-> 5*3+1=16
  22,68-> 22*3+2=68
  28,87-> 28*3+3=87
  106,?-> 106*3+4=322
  thus the next no in the series will be 322.
• 10 years agoHelpfull: Yes(30) No(0)
• 1) 2+3=5*2=10,
  10+3=13*2=26
  10+26=36*2=72
• 10 years agoHelpfull: Yes(27) No(10)
• -3,-4,-9,-28
  -3*1=-3+(-1)=-4
  -4*2=-8+(-1)=-9
  -9*3=-27+(-1)=-28
  -28*4=-112+(-1)=-113
• 10 years agoHelpfull: Yes(21) No(0)
• 3,4,12,76,588,?
  4-3=1
  12-4=8(8^1)
  76-12=64(8^2)
  588-76=512(8^3)
  4684-588=4096(8^4)
  so answer is 4684
• 10 years agoHelpfull: Yes(21) No(1)
• 34+4+21=59;43+3+20=66;12+2+16=30;so ans is 30
• 10 years agoHelpfull: Yes(18) No(0)
• (34,4,21,59),(43,3,20,66) (12,2,16,30) ans 30
• 10 years agoHelpfull: Yes(16) No(3)
• -3,-4,-9,-28,?
  -((-3*-4)-3)=-9
  -(-4*-9)-4)=-28
  ((-28*-9)-9)=-243
• 10 years agoHelpfull: Yes(4) No(7)
• 2,3,10,26,?
  2+3=5;5*2=10
  10+3=13;13*2=26
  26+3=29;29*2=58
• 10 years agoHelpfull: Yes(3) No(6)
• 2,3,10,26,?
  2+3=5;5*2=10
  10+3=13;13*2=26
  26+10=36;36*2=72
• 10 years agoHelpfull: Yes(3) No(0)
• 4,4,21,59,43,3,20,66,12,2,16 , ?
  4.step I: ( 34,4,21 ) 34+4+21=59.
  step II:( 43,3,20 ) 43+3+20=66.
  step III: ( 12,2,16 ) 12+2+16=30.
  Answer is 30.
• 10 years agoHelpfull: Yes(3) No(0)
• 2)5,16,22,68,28,87,106,?
  
  5*3=15+1=16
  22*3=66+2=68
  28*3=84+3=87
  106*3=318+4=322(ans)
• 10 years agoHelpfull: Yes(2) No(0)
• 1) 2,3,10,26
  
  2*2+3*2=10
  3*2+10*2=26
  10*2+26*2=72(ANS)
  
• 10 years agoHelpfull: Yes(1) No(0)
• 3) -3,-4,-9,-28
  
  -3*1-1=-4
  -4*2-1=-9
  -9*3-1=-28
  -28*4-1=-113
• 10 years agoHelpfull: Yes(1) No(0)