18,139,868,917,__,1051

• 139-18=121.....>(11)^2
  868-139=729.....>(9)^3
  917-868=49......>(7)^2
  1042-917=125....>(5)^3
  1051-1042=9.....>(3)^2
  so in this series increases power of 2 and 3 alternatively
  so series will look like this
  18,139,868,917,1042,1051
  so 1042 comes(ans)
• 11 years agoHelpfull: Yes(21) No(0)
• 1042;difference between 1st n 2nd term is 121,which is square of 11,n diff between 3rd n 4th term is 49, which is square of 7,hence next difference will be 9, which is square of 3...
• 11 years agoHelpfull: Yes(2) No(0)
• 139-18=121=(11)^2
  868-139=729=(9)^3
  917-868=49=(7)^2
  1042-917=125=(5)^3
  1051-1042=9=(3)^2
• 10 years agoHelpfull: Yes(0) No(0)