"Find out   which of the following sequences are arithmetic progressions. For those which
Channel: Doubtnut
Date: 2020-06-28

"Find out
 
  which of the following sequences are arithmetic progressions. For those which
 
  are arithmetic progressions, find out the common difference.
 `12 ,\ 2,\ -8,\ -18 ,\ ddot`
 (ii) `3,\ 3,\ 3,\ 3,\ ddot`
 
 (iii) `p ,\ p+90 ,\ p+180 ,\ p+270 ,\ `
 where `p=(999)^(999)`"