 Hi and welcome to the session. I'm Priyanka and I'll be helping you with the following question which says, A city has two main roads which cross each other at the center of the city. These two roads along to the north-south direction and the east-west direction. All the other streets of the city run parallel to these roads and are 200 meters apart. There are about five streets in each direction. Using one centimeter is equal to 200 meters, draw a model of the city on your notebook. Represent the road street by single lines. There are many cross streets in your model. A particular cross street is made by two streets running in the north-south direction and another in the east-west direction. Each cross is referred to in the following manner. If the second street running in the north-south direction and the fifth in the east direction meets at some crossing, then ball that crossing street as two five. Using the connection, find how many cross streets can be referred as four or three and how many cross streets can be referred as three comma four. This is a long question which involves a little bit of planning also. So first of all, we need to draw a model. This is the north and south direction whereas this is the east and west direction. Now they are saying that they have five streets running parallel to each direction. So let's have, let this be street one, street two, street three. Then we need to have a fourth street also. Let us expand street four and this be street five. So the question said that take one centimeter equals 200 meter, so we have taken this distance as one centimeters, right? So there are five street in each direction. These are the five streets which we have drawn in the direction parallel to east-west. Now we need to have five streets parallel to the direction north-south and that will be made like this. So these are the five streets which have been drawn parallel to north-south directions also. Now this completes half of the question as we have drawn a model to represent the situation. Now they are saying that there are many cross streets in your model. We will represent this as the model that is the street model, right? Further they say that a particular cross street is made by two streets running, one running parallel to your north-south direction and another running parallel to the east-west direction. If the second street running in the north-south direction and the fifth street in the east-west direction, that is the fifth street in the east-west direction, that means this point, meet at some crossing, this is the crossing they are meeting, and we will call this cross street as 2,5, right? Now they are saying that using this convection, how many cross streets can be referred as 4,3? So first of all, fourth street running parallel to north-south direction and the third street running parallel to the east-west direction are meeting at a crossing which is this crossing. So we will refer this as 4,3. And how many crossing of such type can be formed? There can be only one point where these two lines meet each other, right? So further they are saying the next point as 3,4, that means the third street from here and the fourth street running parallel to east-west direction, that means this point we are talking about is referred as 3,4, right? So this completes the entire question that was given to us. This point was just an example which was given to us by the question so that we can understand how the point system works. So I hope you enjoyed this session and enjoyed drawing the street model also. Bye for now.