 Good morning students, as we have chapter squares and square rules, we are going to learn how to find squares of any number, because finding the squares are going to be very difficult. So I am going to give you a simple trick which will definitely help you to find squares of any number, square of any number. You can see on the board I have written the squares from 1 to 5. We know square of 1 is 1, square of 2 is 4, square of 3 is 9. But what this pattern is called, this pattern shows you how to find the square or you can find the square of any number or consecutive number, see. Example, one square is equal to 1, if I add these two numbers, 1 equals 1, it will be equal to 2. And if I add this two, with the next number that is 2, then 2 plus 2 becomes 4. This is nothing but the square of 2, which is 4. Next, if I add this 4 with 2, so 4 plus 2 becomes 6. And if I add 3 into the 6, it becomes 9, which is nothing but the square of 3. So we are going to add in this way 3 and we are going to get a square of number. The pattern of the sequence I have written here, this 1 should be added with 1, 1 plus 1, 2. And this 2 will be added with this 2 becomes 4, this is your result. Now for next number, 4 plus 2 is 6 and 6 plus 3 is 9, which is 3 square, which becomes 9. Similarly, we can find, let's see the next numbers now. 9 plus 3 is 12 and 12 plus 4 is 16. So it is square of 4, which is 16. Now 16 plus 4, which is 20 and 20 plus 5, which is 25. So which is nothing but the square of 5. In this way, if you follow, you will get a square of any number. You can try next series like this one. Thank you so much.