Consider the sequence -6,-12,18,24,-30,-36,42,...,if the sum of first n terms of the sequence is 132,then what is the value of n ?

• n=22
  just consider it as AP where first term is 6 and last term is 132 and d=6.
• 12 years agoHelpfull: Yes(2) No(3)
• In this sequence every set of 7 numbers will result in zero and (7x+1) th term will give sum of whole series till that number.
  
  so 22nd number is 132.
  n=22
• 12 years agoHelpfull: Yes(2) No(2)
• it is not posiible to get sum 132 because for every 7 numbers result is 0 and the sequence will be after 7 numbers 21st number is -126 next number is -132 and 23 rd numbe is 138 and 20th number is 120 so up to then sum will be 0 and 24th nuber is 144 which is the total sum of the series so we will not get sum 132
• 12 years agoHelpfull: Yes(2) No(2)
• not possible......132 will not come in dis sequence
• 12 years agoHelpfull: Yes(0) No(1)
• 48;
  itz multiples of 6;
  
• 12 years agoHelpfull: Yes(0) No(2)
• n=22
  just consider it as AP where first term is 6 and last term is 132 and d=6.
• 12 years agoHelpfull: Yes(0) No(0)
• Here two time - sign and two time + sign and add 6 for get next term.
  so the ans:-48.
  
• 12 years agoHelpfull: Yes(0) No(0)
• the sum of 1st 4 term is 24
  the sum of 2nd 4 term in 24 and so on ...
  so
  the sum of first 5 group of 4 term =120
  after that next group will exceed to 144
  
  so its not possible
• 11 years agoHelpfull: Yes(0) No(0)