8,10,18,44,124,?
the options are
344,366,356,354

• 8, 10, 18, 44, 124, x
  
  1st differences: 2, 8, 26, 80, x - 124
  2nd differences: 6, 18, 54, x - 204
  
  From here, I see that:
  6 = 6*1 = 6*(3^0)
  18 = 6*3 = 6*(3^1)
  54 = 6*9 = 6*(3^2)
  
  So the next 2nd difference after 54 could be 6*(3^3) = 162.
  That is, x - 204 = 162, so, x = 366.
• 11 years agoHelpfull: Yes(15) No(0)
• the ans wl be 366
• 11 years agoHelpfull: Yes(3) No(0)
• ans is 366
  explanation-8*3-16=8,8*3-14=10,10*3-12=18,18*3-10=44,44*3-8=124,124*3-6=366
• 11 years agoHelpfull: Yes(2) No(0)
• how it will 366
• 11 years agoHelpfull: Yes(1) No(0)
• 8 10 18 44 124 X
  difference : 2 8 26 80 x-124
  then, 6 18 54
  6=6*(3^0)
  18=6*(3^1)
  54=6*(3^2)
  then,
  x-124=162
  ans=366
  
• 11 years agoHelpfull: Yes(1) No(3)