1) a,bb,ccc,dddd,eeeee,ffffff,........................zzz
what is 120 th letter

• series is : 1,2,3,4,5.........
  So
  120= nx(n+1)/2
  or 240=15x16
  so n=15
  since the 15th letter is "O"...hence the answer will be "O".
• 8 years agoHelpfull: Yes(28) No(0)
• series:1,2,3,4,5.....
  So,
  120=1+2+3+...+N
  let N=15
  n=n*(n+1)/2
  =15*16/2
  =120
  N=15
  15th letter is "O".
  
  Ans: O
• 8 years agoHelpfull: Yes(9) No(1)
• Series is like:1,2,3,4,5,6,7,8,.................26
  so Given number=120
  for that we have to guess on which number it falls by formula:Sum=n*(n-1)/2
  I think 16th number ll give proper position i,e 16*(15)/2=120
  So on 16th position 'P'will fall,
  So my ans is ''P''.
• 8 years agoHelpfull: Yes(7) No(6)
• answer 'k'
• 8 years agoHelpfull: Yes(2) No(3)
• answer is "k"
• 8 years agoHelpfull: Yes(1) No(6)
• p 120 times
  104=z
  and later on count to 120 again from a
• 8 years agoHelpfull: Yes(0) No(3)
• a -1
  b -2
  c -3
  .
  .
  .
  and so on up to n - 14 .. total sum= 105
  o - 15 ==105+15 =120
  ans is "o"
• 8 years agoHelpfull: Yes(0) No(1)
• series is : 1,2,3,4,5.........
  So
  120= nx(n+1)/2
  or 240=15x16
  so n=15
  since the 15th letter is "O"...hence the answer will be "O".
• 5 years agoHelpfull: Yes(0) No(0)