3, 22, 7, 45, 15, ?, 31 Complete the series.

• Its double series
  
  its no. double plus one
  
  22*2+1=45 so 45*2+1= 91
  So, 91 is answer
• 13 years agoHelpfull: Yes(5) No(2)
• 3, 22, 7, 45, 15, ?, 31
  
  There are two series.
  
  3*2+1=7
  7*2+1=15
  15*2+1=31
  ..
  22*2+1=45
  45*2=1=91
  
  so 91 replaces ? in the series.
• 13 years agoHelpfull: Yes(3) No(0)
• ANS:91
  
  REASON AS EXPLAINED ABOVE!!
• 13 years agoHelpfull: Yes(2) No(1)
• 22x2=44+1=45
  so,45x2=90+1=91
• 13 years agoHelpfull: Yes(1) No(1)