1,2,3,7,7,22,15,..........

• alternative selection
  1,3,7,15---31
  (1*2+1),(3*2+1),(7*2+1),-----(15*2+1)
  2,7,22,----67
  (2*3+1),(7*3+1),----(22*3+1)
• 8 years agoHelpfull: Yes(14) No(6)
• alternate series:
  1,1*2+1=3,3*2+1=7,.....
  2,2*3+1=7,7*3+1=22,22*3+1=67,...
  ans is 67
• 7 years agoHelpfull: Yes(1) No(4)
• 1,2,3,7,7,22,15
  1,3,7,15-->1*2+1,3*2+1,7*2+1
  2,7,22,--->2*3+1,7*3+1,22*3+1=67
• 7 years agoHelpfull: Yes(1) No(0)
• TAKE THE NUMBERS IN EVEN POSITION
  2+5=7
  7+15=22
  22+45=67
  
  ANS IS 67...
• 7 years agoHelpfull: Yes(1) No(0)
• 202 is the answer
• 7 years agoHelpfull: Yes(0) No(6)