1,1,2,4,6,36,39,15,21

• 1,1,2,4,6,36,39,1521
  
  next number will be 1525
  
  series will become
  
  1,1,2,4,6,36,39,1521, 1525
  
  
  1^2=1
  1+1=2
  2^2=4
  4+2=6
  6^2=36
  36+3=39
  39^2= 1521
  1521+4=1525
• 12 years agoHelpfull: Yes(112) No(6)
• 1+1=2
  4+2=6
  36+3=39
  1521+4=1525
  
  so answer is 1525
• 10 years agoHelpfull: Yes(1) No(1)