1, 7, 8, 49, 56, 57, 343, ...

• first take only one number 1
  1*7=7
  7+1=8
  then series consists of 3 number 1 7 8
  then 7*7=49
  8*7=56
  56+1=57
  mow the series become 1 7 8 49 56 57
  next
  49*7=343
  56*7=392
  57*7=399
  399+1=400
  SO ans=392
• 10 years agoHelpfull: Yes(34) No(0)
• 7^1=7
  7+1=8
  7^2=49
  49+7=56
  56+1=57
  7^3=343
  343+49=392
  
  
• 10 years agoHelpfull: Yes(17) No(2)
• 1*7=7
  7+1=8
  7*7=49
  8*7=56
  56+1=57
  49*7=343
  56*7=392 :ans......
• 10 years agoHelpfull: Yes(4) No(1)
• ANS : 3192
  1,7,8,49,56,57,343....??
  1,7^1,8,7^2,7*8,(7*8)+1(add number before 7),7^3,... so next will be 56*57 and after that (56*57)+49(add number before 56) and after that 7^4
  
  So it will 1,7,8,49,56,57,343,56*57,(56*57)+49,7^4,....
  
  so according to question next to 343 is 56*57 = 3192
  
  
  
• 10 years agoHelpfull: Yes(3) No(2)
• series is wrong..after 49 there should be 50...
• 10 years agoHelpfull: Yes(3) No(2)
• 7^2=49
  49+7=56
  56+1=57
  7^3=343
  343+1=344
• 10 years agoHelpfull: Yes(2) No(15)
• next number will be 392 as
  49=7*7
  56=7*8
  57=56+1
  343=7*49
  392=7*56
  so,next no is 392
• 10 years agoHelpfull: Yes(2) No(1)
• 1*7+1=8
  7*7=49
  8*7=56
  56+1=57
  ..
  343+1=344
• 10 years agoHelpfull: Yes(2) No(0)
• 1, 7, 8, 49, 56, 57, 343, ..=392
• 10 years agoHelpfull: Yes(0) No(4)
• 7^7=49
  8*7=56
  after adding 1 to number (56+1)=57
  49*7=343
  56*7=392
• 10 years agoHelpfull: Yes(0) No(2)
• ans is 2744
  1+7=8
  7^2=49
  7*8=56
  8+49=57
  49^2=343
  49*56=2744
• 10 years agoHelpfull: Yes(0) No(7)
• ther is no unique solution
• 10 years agoHelpfull: Yes(0) No(3)
• 344
  7^3+1
• 10 years agoHelpfull: Yes(0) No(1)
• 56*7=336
  7*7=49
  8*7=56
  56*7=336
  
  
• 10 years agoHelpfull: Yes(0) No(1)
• answer is 350
  
• 10 years agoHelpfull: Yes(0) No(1)
• since17711872497275672857then733437349392
• 10 years agoHelpfull: Yes(0) No(1)
• ans is 3192
• 9 years agoHelpfull: Yes(0) No(0)
• First take 1 and 7
  
  1+7=8
  then 2nd term of addition
  
  7*7=49
  then result of addition
  8*7=56
  when we take First two 1 n 7 we find next 3 terms
  
  again we take next two 8 and 49
  
  same process
  8+49=57
  
  49*7=343
  
  57*7=399
  
  so series will be.........
  
  1 , 7 , 8 , 49 , 56, 57, 343, 399
• 9 years agoHelpfull: Yes(0) No(1)
• The answer is 392
  since
  7^1=7
  7+1=8
  7^2=49
  49+7=56
  56+1=57
  7^3=343
  343+49=392
• 9 years agoHelpfull: Yes(0) No(0)