Q. What is the next number of the following sequence.
3, 4, 12, 45, 196, 1005,.... ?

• look at that numbers carefully
  (3*1)+1^2=4
  (4*2)+2^2=12
  (12*3)+3^2=45
  (45*4)+4^2=196
  (196*5)+5^2=1005
  so the number will be
  (1005*6)+6^2=6066
  Ans is 6066.
  
  
  (2*1)+1^2=3
• 11 years agoHelpfull: Yes(14) No(2)
• ans is 6066
  3*1+1=3
  4*2+4=12
  12*3+9=45
  45*4+16=196
  196*5+25=1005
  1005*6+36=6066
• 10 years agoHelpfull: Yes(2) No(1)
• 1005*6+6^2=6066
• 10 years agoHelpfull: Yes(0) No(1)