"In a flower   bed there are 23 rose plants in the first row, twenty one in the second row,
Channel: Doubtnut
Date: 2020-06-28

"In a flower
 
  bed there are 23 rose plants in the first row, twenty one in the second row,
 
  nineteen in the third row and so on. There are five plants in the last row.
 
  How many rows are there in the flower bed?"