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

• 3 7 15 and 31 belong to one series following the pattern 2n+1. similarly is 22 45 and so on with d same trend. so the answer id 45*2+1=91
• 12 years agoHelpfull: Yes(6) No(3)
• ANSWER : 91
  
  SOLUTION :
  
  3+4*1=7
  7+4*2=15
  15+4*4=16
  Similarly
  22+23*1=45
  45+23*2=91
• 12 years agoHelpfull: Yes(3) No(1)
• the question contains 2 series following the same patterns..
  
  3,(3*2)+1=7,(7*2)+1=15,(15*2)+1=31
  22,(22*2)+1=45,(45*2)+1=91
  
• 12 years agoHelpfull: Yes(3) No(0)
• Ans. 91
  since (22*2)+1=45 then,(45*2)+1=91
• 12 years agoHelpfull: Yes(1) No(1)
• 91..22*2+1=45,so 45*2+1=91
• 12 years agoHelpfull: Yes(1) No(0)
• 90+1=91
  3*2=6+1=7 so on...
• 8 years agoHelpfull: Yes(0) No(0)