7,28,63,124,?

• series is 7,26,63,124
  2^3-1=7
  3^3-1=26
  4^3-1=63
  5^3-1=124
  6^3-1=215 ans.
• 11 years agoHelpfull: Yes(46) No(5)
• question is wrong : it should be 7,28,63,112....
  next number is : 175 !!!
  coz.. 7*1 = 7
  7* (2^2) = 28
  7* (3^2) = 63
  7* (4^2) = 112
  7* (5^2) = 175..
• 11 years agoHelpfull: Yes(15) No(9)
• 2^3-1=7
  3^3-1=26 28 is wrong
  and so on..
  6^3-1=215
• 11 years agoHelpfull: Yes(5) No(0)
• is it 26 r 28
• 11 years agoHelpfull: Yes(3) No(0)
• according to the given series if there is no confusion among 26 or 28
  7*2+14=28
  28*2+13=69
  69*2-14=124
  124*2-13=235
• 11 years agoHelpfull: Yes(0) No(4)
• question they have given is wrong ... the question should be 7,26,63,124,?
  (2^3-1),(3^3-1),(8^3-1),(5^3-1),(6^3-1)
• 8 years agoHelpfull: Yes(0) No(0)