5,6,?,87,412,2185.
find the number that can be put in place of the question mark
(a)13
(b)14
(c)18
(d)20

• correct ans is 20.
  series in the form of 5*1+1^3=6,6*2+2^3=20,20*3+3^3=87,87*4+4^3=412,412*5+5^3=125.
  so that ans is (d)
• 14 years agoHelpfull: Yes(58) No(3)
• 
  @Rashmi
  
  20*3+3^3=87
• 11 years agoHelpfull: Yes(2) No(1)
• 14
• 14 years agoHelpfull: Yes(1) No(19)
• how 20?
  20*3 + 3^3=69 not 87...
  can any post the correct solution please
• 12 years agoHelpfull: Yes(1) No(10)
• Ans is 20
  the sequence goes like this 5*1+cube(1)=6
  6*2+cube(2)=20
  20*3+cube(3) =87 and so the next terms
• 7 years agoHelpfull: Yes(1) No(0)
• The answer is 20. as the sequence goes like
  5*1+1^3=6,6*2+2^3=20,20*3+3^3=87 ,87*4+4^3=412 and so on.
  Answer: (d) 20
• 1 Month agoHelpfull: Yes(0) No(0)