Q. What is the next number of the following sequence
3,11,31,69...

• 3=1^3+2
  11=2^3+3
  31=3^3+4
  69=4^3+5
  similarly, next no. is
  5^3+6=125+6=131
• 10 years agoHelpfull: Yes(84) No(0)
• 11-3=8 , 31-11=20 , 69-31=38, so
  8,20,38 is the diference between the consecutive numbers therefore next diffrence is 8+12=20 , 20+18 = 38 , 38+24 = 62 so answer is 69 + 62 = 131 answer
• 10 years agoHelpfull: Yes(10) No(3)
• formate:- (n+1)*n^3
  3= 2*1^3
  11=3*2^3
  31=4*3^3
  69=5*4^3
  so, 6*5^3=6*125=131
• 10 years agoHelpfull: Yes(5) No(6)