4,20,84,340,

• given series 4,20,84,340
  4+4*4=20
  20+4*4*4=84
  84+4*4*4*4=340
  340+4*4*4*4*4=1364
• 11 years agoHelpfull: Yes(18) No(0)
• (4+1)4=20
  (20+1)4=84
  (84+1)4=340
  (340+1)4=1364
• 11 years agoHelpfull: Yes(14) No(0)
• Sry at the end
  i made a mistake in the sum
  so answer is=1364
• 11 years agoHelpfull: Yes(6) No(1)
• function f(n)=4^n+f(n-1) where n>1
  f(1)=4
  f(2)=4^2+4=16+4=20
  f(3)=4^3+20=64+20=84
  f(4)=4^4+84=256+84=340
  f(5)=4^5+340=1024+340=1354
• 11 years agoHelpfull: Yes(4) No(7)
• 4*0+4=4
  4*4+4=20
  4*20+4=84
  84*4+4=340
  so, 340*4+4=1364
  
• 11 years agoHelpfull: Yes(4) No(0)
• 4+16=20,
  20+64=84,
  84+256=340,
  340+1024=1364
• 11 years agoHelpfull: Yes(2) No(0)
• 4
  4*4+4=20
  20*4+4=84
  84*4+4=340
  340*4+4=1364
• 11 years agoHelpfull: Yes(2) No(0)
• 
  16*4= 64*4= 256*4= 1024
  4 20 84 340 1364
  Answer is 1364
• 11 years agoHelpfull: Yes(1) No(0)
• 4*20=80+4=84
  84*4=336+4=340
  340*4=1360+4=1364
• 9 years agoHelpfull: Yes(0) No(0)