 Hello and welcome to the session. In this session we discuss the following question which says find the value of the following using caller method 24 square. Before moving on to the solution, let's recall the identity a plus b whole square is equal to a square plus 2ab plus b square. This would be used as the key idea in this question. Now let's move on to the solution. We need to find 24 square. Now the given number is 24. It has 2 digits, 10th digit and 1st digit. Now here is the 10th digit say a is 2 and the 1st digit in this number say b is 4. Now in this identity a plus b whole square is equal to a square plus 2ab plus b square. We have 3 terms a square, 2ab and b square. So we will make 3 columns to find the square of 24. Column 1 is headed by a square, column 2 is headed by 2 into a into b, column 3 is headed by b square. Now we know that a is 2 and b is 4. So we can find the values for each of these columns. So for the 1st column we have a square, this is given by 2 square that is 4. For the 2nd column it's 2ab that is 16. Then 3rd column has b square that is 16 again. Now we underline the units digit of b square that is 6. And we carry over the 10th digit of b square that is 1 to the 2nd column and add it to the value of 2ab that is 16. So we add 1 to 16, we get 17. Then we underline the units digit of this number 17 that is 7. And we carry over the units digit that is 1 to the 1st column and add it to the value of a square. So when 1 is added to 4 we get 5. We underline this 5. Now the underlined digits give us the required square of the number that is we have 24 square is equal to 5, 7, 6. Since these are the underlined digits. So this is the column method for finding the square of a number. So final answer is 24 square is equal to 576. This completes the session. Hope you have understood the solution for this question.