1370. Arithmetic Progression - Situation 1 - Class X Maths - CBSE, ICSE, NCERT
2015-07-13 19 Dailymotion
In a cinema theatre there are 40 seats in the last row, 35 in 2nd, 30 in 3rd and each successive row follows similarly. If the number of seat in row is 10, how rows are there ?
