4,20,126_ _ _
what is the next number

• 4
  4 * 4 + 4 = 20
  20 * 6 + 6 = 126
  126 * 8 + 8 = 1016
  1016 * 10 + 10 = 10170
  so it may also be 1016 , 10170
• 11 years agoHelpfull: Yes(13) No(0)
• even no.s : 2,4,6,8.....
  "2+2" = 4
  "4*4"+4=20
  "20*6"+6=126..."126*8"+8=1016...so answer is 1016
  
  
• 11 years agoHelpfull: Yes(4) No(1)
• 4,20,126..
  20-4=16
  126-20-106
  1132-126=1006..
  ans wil b 1132..
• 11 years agoHelpfull: Yes(2) No(3)
• first two terms(4&20) have difference of 16,
  next diff. between 20 and 126 is 116,
  therfore difference between next two terms would be of 1116,
  so answer is 1116+126=1242
• 11 years agoHelpfull: Yes(1) No(5)
• the next three terms are 1242,12358,123474
• 11 years agoHelpfull: Yes(0) No(2)