Complete the series 3, 10, 29, __, 127, 218
1] 60
2] 66
3] 72

• 1^3+2=3
  2^3+2=10
  .............4^3+2=66 ans
• 10 years agoHelpfull: Yes(14) No(1)
• Nth term = (N-1)th term + (1+2+3+...N)x6 + 1
  1st term: 3
  2nd term: 10 = 3 + 1*6 + 1
  3rd term: 29 = 10 + 3x6 + 1
  4th term: 66 = 29 + 6x6 + 1
  5th term: 127 = 66 + 10x6 + 1
  6th term: 218 = 127 + 15*6 + 1
  
  so ans is 66
• 10 years agoHelpfull: Yes(1) No(0)
• The sequence is 1^3 + 2, 2^3 + 2, 3^3 + 2, 4^3 + 2, 5^3 + 2, 6^3 + 2.
  Clearly, both the terms 66 and 127 are correct.
• 8 years agoHelpfull: Yes(0) No(0)