IF 1 = -1
2 = 2
3 = 15
4 = 44
5 = 95
then 10 = ?

• 
  1^3-1*(1+1) => 1-2 = -1
  2^3-2*(2+1) => 8-6 = 2
  3^3-3*(3+1) => 27-12 = 15
  4^3-4*(4+1) => 64-20 = 44
  5^3-5*(5+1) => 125-30 = 95
  Similarly
  10^3-10*(10+1) => 1000-110 = 890
  
  Ans : 890
  
• 10 years agoHelpfull: Yes(12) No(0)
• 10 = 890
  
  1 => 1^3 - 1^2 - 1 = -1
  2 => 2^3 - 2^2 - 2 = 2
  3 => 3^3 - 3^2 - 3 = 15
  4 => 4^3 - 4^2 - 4 = 44
  5 => 5^3 - 5^2 - 5 = 95
  
  Tn = n^3 - n^2 - n
  
  10 => 10^3 - 10^2 - 10 = 890
  
• 10 years agoHelpfull: Yes(3) No(0)