--- title: Which row? Steps that grow by the same number — a lesson of Mova's school · trees and pragmatics description: «Which row? Steps that grow by the same number», a lesson of the lessons course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: When each row has the same number more than the row before, row N has the first row plus N - 1 steps. --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/lessons/176-which-row/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [Lessons](https://md.mova.elamur.ai/free/en/corpora/school/lessons/) / Which row? Steps that grow by the same… # Which row? Steps that grow by the same number Lesson 176 of the lessons course of Mova's primary school: 4 sentences, each with its syntax tree and pragmatics. The lessons are written for Mova, and their agreed trees are part of Mova corpus 0.4 (CC BY-SA 4.0). - [0](https://md.mova.elamur.ai/free/en/corpora/school/lessons/176-which-row/0/) — When each row has the same number more than the row before, row N has the first row plus N - 1 steps. - [1](https://md.mova.elamur.ai/free/en/corpora/school/lessons/176-which-row/1/) — To find which row has a certain number, take away the first row, divide by the step, and add 1. - [2](https://md.mova.elamur.ai/free/en/corpora/school/lessons/176-which-row/2/) — Row 1 has 8 seats and each row has 3 more. - [3](https://md.mova.elamur.ai/free/en/corpora/school/lessons/176-which-row/3/) — Which row has 29 seats? 29 - 8 = 21, 21 / 3 = 7 steps, so row 7 + 1 = 8. - ← previous: [Two circles: both and neither](https://md.mova.elamur.ai/free/en/corpora/school/lessons/175-venn-neither/) - next →: [Adding all the rows](https://md.mova.elamur.ai/free/en/corpora/school/lessons/177-sum-of-rows/) - ↑ back to [Lessons](https://md.mova.elamur.ai/free/en/corpora/school/lessons/)